[{"article_number":"e70035","language":[{"iso":"eng"}],"doi":"10.1002/pamm.70035","title":"A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints","year":"2026","author":[{"full_name":"Chen, Chin","last_name":"Chen","first_name":"Chin","id":"114741"},{"full_name":"Hofmann, Martin","last_name":"Hofmann","first_name":"Martin"},{"first_name":"Thomas","last_name":"Wallmersperger","full_name":"Wallmersperger, Thomas"}],"publication_identifier":{"issn":["1617-7061","1617-7061"]},"date_updated":"2026-02-24T15:10:04Z","publication_status":"published","intvolume":"        26","date_created":"2026-02-19T10:03:06Z","type":"journal_article","publication":"PAMM","issue":"1","abstract":[{"lang":"eng","text":"<jats:title>ABSTRACT</jats:title>\r\n                  <jats:p>Clinching is a widely adopted joining technique in the automotive industry, enabling the fabrication of lightweight structures from dissimilar sheet materials. Accurate prediction of the fatigue life of clinched joints is essential for ensuring structural safety and minimizing development costs. However, full 3D fatigue simulations over millions of cycles are computationally intensive due to the complexity of contact mechanics. This study introduces a 2D numerical model that circumvents direct contact modeling by applying a slip condition at the sheet interface, significantly reducing computational demands. A micro‐slip friction model is used to represent the mechanical interface behavior, while a two‐scale damage model captures the fatigue damage evolution. The model is validated against experimental data and used to investigate the influence of friction coefficient and tangential contact stiffness on fatigue life, highlighting its efficiency and predictive capability.</jats:p>"}],"publisher":"Wiley","_id":"64251","user_id":"114741","volume":26,"status":"public","citation":{"mla":"Chen, Chin, et al. “A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints.” <i>PAMM</i>, vol. 26, no. 1, e70035, Wiley, 2026, doi:<a href=\"https://doi.org/10.1002/pamm.70035\">10.1002/pamm.70035</a>.","ama":"Chen C, Hofmann M, Wallmersperger T. A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints. <i>PAMM</i>. 2026;26(1). doi:<a href=\"https://doi.org/10.1002/pamm.70035\">10.1002/pamm.70035</a>","bibtex":"@article{Chen_Hofmann_Wallmersperger_2026, title={A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints}, volume={26}, DOI={<a href=\"https://doi.org/10.1002/pamm.70035\">10.1002/pamm.70035</a>}, number={1e70035}, journal={PAMM}, publisher={Wiley}, author={Chen, Chin and Hofmann, Martin and Wallmersperger, Thomas}, year={2026} }","apa":"Chen, C., Hofmann, M., &#38; Wallmersperger, T. (2026). A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints. <i>PAMM</i>, <i>26</i>(1), Article e70035. <a href=\"https://doi.org/10.1002/pamm.70035\">https://doi.org/10.1002/pamm.70035</a>","ieee":"C. Chen, M. Hofmann, and T. Wallmersperger, “A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints,” <i>PAMM</i>, vol. 26, no. 1, Art. no. e70035, 2026, doi: <a href=\"https://doi.org/10.1002/pamm.70035\">10.1002/pamm.70035</a>.","chicago":"Chen, Chin, Martin Hofmann, and Thomas Wallmersperger. “A 2D Approach to Predict the High‐Cycle Fatigue Life of Clinched Joints.” <i>PAMM</i> 26, no. 1 (2026). <a href=\"https://doi.org/10.1002/pamm.70035\">https://doi.org/10.1002/pamm.70035</a>.","short":"C. Chen, M. Hofmann, T. Wallmersperger, PAMM 26 (2026)."},"project":[{"_id":"142","name":"TRR 285 - Subproject B03"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"name":"TRR 285 - Project Area B","_id":"132"}]},{"abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>Salt-spray testing is widely used in the automotive and materials industries to assess the corrosion resistance of protective coatings, where uniform corrosion is a key indicator of material performance. This work presents a numerical uniform corrosion model that predicts the corrosion rate of hot-dip zinc in salt-spray environments by incorporating electrochemical reactions, mass transport via the Nernst–Planck equation, and ionic-strength effects through the Brønsted–Bjerrum relation. The model is calibrated using immersion-test data and extended to account for electrolyte layer growth, droplet deposition, and periodic run-off in salt-spray environments. The calibration establishes a relationship between the porosity of the zinc oxide layer and the rate constant of zinc oxide precipitation. The validated model reproduces the transition from activation- to diffusion-controlled corrosion and captures the experimentally observed corrosion kinetics with an error margin of 20% when electrolyte renewal is included. The results highlight the decisive role of electrolyte dynamics in salt-spray environments and provide a foundation for extending the framework to more complex cyclic corrosion tests.</jats:p>","lang":"eng"}],"project":[{"_id":"142","name":"TRR 285 - Subproject B03"},{"name":"TRR 285 - Project Area B","_id":"132"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"publication":"npj Materials Degradation","citation":{"apa":"Chen, C., Hofmann, M., &#38; Wallmersperger, T. (2026). Modeling the uniform corrosion behavior of zinc in salt spray testing. <i>Npj Materials Degradation</i>. <a href=\"https://doi.org/10.1038/s41529-026-00749-0\">https://doi.org/10.1038/s41529-026-00749-0</a>","mla":"Chen, Chin, et al. “Modeling the Uniform Corrosion Behavior of Zinc in Salt Spray Testing.” <i>Npj Materials Degradation</i>, Springer Science and Business Media LLC, 2026, doi:<a href=\"https://doi.org/10.1038/s41529-026-00749-0\">10.1038/s41529-026-00749-0</a>.","ieee":"C. Chen, M. Hofmann, and T. Wallmersperger, “Modeling the uniform corrosion behavior of zinc in salt spray testing,” <i>npj Materials Degradation</i>, 2026, doi: <a href=\"https://doi.org/10.1038/s41529-026-00749-0\">10.1038/s41529-026-00749-0</a>.","short":"C. Chen, M. Hofmann, T. Wallmersperger, Npj Materials Degradation (2026).","ama":"Chen C, Hofmann M, Wallmersperger T. Modeling the uniform corrosion behavior of zinc in salt spray testing. <i>npj Materials Degradation</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1038/s41529-026-00749-0\">10.1038/s41529-026-00749-0</a>","chicago":"Chen, Chin, Martin Hofmann, and Thomas Wallmersperger. “Modeling the Uniform Corrosion Behavior of Zinc in Salt Spray Testing.” <i>Npj Materials Degradation</i>, 2026. <a href=\"https://doi.org/10.1038/s41529-026-00749-0\">https://doi.org/10.1038/s41529-026-00749-0</a>.","bibtex":"@article{Chen_Hofmann_Wallmersperger_2026, title={Modeling the uniform corrosion behavior of zinc in salt spray testing}, DOI={<a href=\"https://doi.org/10.1038/s41529-026-00749-0\">10.1038/s41529-026-00749-0</a>}, journal={npj Materials Degradation}, publisher={Springer Science and Business Media LLC}, author={Chen, Chin and Hofmann, Martin and Wallmersperger, Thomas}, year={2026} }"},"type":"journal_article","date_created":"2026-02-19T10:02:29Z","date_updated":"2026-02-24T15:10:55Z","publication_status":"published","status":"public","title":"Modeling the uniform corrosion behavior of zinc in salt spray testing","year":"2026","author":[{"id":"114741","last_name":"Chen","first_name":"Chin","full_name":"Chen, Chin"},{"first_name":"Martin","last_name":"Hofmann","full_name":"Hofmann, Martin"},{"full_name":"Wallmersperger, Thomas","first_name":"Thomas","last_name":"Wallmersperger"}],"publication_identifier":{"issn":["2397-2106"]},"doi":"10.1038/s41529-026-00749-0","user_id":"114741","publisher":"Springer Science and Business Media LLC","_id":"64250","language":[{"iso":"eng"}]},{"status":"public","publisher":"Springer Science and Business Media LLC","_id":"65620","user_id":"107109","volume":5,"citation":{"chicago":"Einwag, Jonathan-Markus, Maximilian Wiemer, Sandro Wartzack, and Stefan Goetz. “A Hybrid Knowledge Based and Data Based Approach for Efficient Clinch Joint Design.” <i>Discover Mechanical Engineering</i> 5, no. 1 (2026). <a href=\"https://doi.org/10.1007/s44245-026-00230-x\">https://doi.org/10.1007/s44245-026-00230-x</a>.","short":"J.-M. Einwag, M. Wiemer, S. Wartzack, S. Goetz, Discover Mechanical Engineering 5 (2026).","apa":"Einwag, J.-M., Wiemer, M., Wartzack, S., &#38; Goetz, S. (2026). A hybrid knowledge based and data based approach for efficient clinch joint design. <i>Discover Mechanical Engineering</i>, <i>5</i>(1), Article 56. <a href=\"https://doi.org/10.1007/s44245-026-00230-x\">https://doi.org/10.1007/s44245-026-00230-x</a>","ieee":"J.-M. Einwag, M. Wiemer, S. Wartzack, and S. Goetz, “A hybrid knowledge based and data based approach for efficient clinch joint design,” <i>Discover Mechanical Engineering</i>, vol. 5, no. 1, Art. no. 56, 2026, doi: <a href=\"https://doi.org/10.1007/s44245-026-00230-x\">10.1007/s44245-026-00230-x</a>.","ama":"Einwag J-M, Wiemer M, Wartzack S, Goetz S. A hybrid knowledge based and data based approach for efficient clinch joint design. <i>Discover Mechanical Engineering</i>. 2026;5(1). doi:<a href=\"https://doi.org/10.1007/s44245-026-00230-x\">10.1007/s44245-026-00230-x</a>","bibtex":"@article{Einwag_Wiemer_Wartzack_Goetz_2026, title={A hybrid knowledge based and data based approach for efficient clinch joint design}, volume={5}, DOI={<a href=\"https://doi.org/10.1007/s44245-026-00230-x\">10.1007/s44245-026-00230-x</a>}, number={156}, journal={Discover Mechanical Engineering}, publisher={Springer Science and Business Media LLC}, author={Einwag, Jonathan-Markus and Wiemer, Maximilian and Wartzack, Sandro and Goetz, Stefan}, year={2026} }","mla":"Einwag, Jonathan-Markus, et al. “A Hybrid Knowledge Based and Data Based Approach for Efficient Clinch Joint Design.” <i>Discover Mechanical Engineering</i>, vol. 5, no. 1, 56, Springer Science and Business Media LLC, 2026, doi:<a href=\"https://doi.org/10.1007/s44245-026-00230-x\">10.1007/s44245-026-00230-x</a>."},"project":[{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"name":"TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 - Subproject B05","_id":"144"}],"title":"A hybrid knowledge based and data based approach for efficient clinch joint design","year":"2026","author":[{"last_name":"Einwag","first_name":"Jonathan-Markus","full_name":"Einwag, Jonathan-Markus"},{"first_name":"Maximilian","last_name":"Wiemer","full_name":"Wiemer, Maximilian"},{"full_name":"Wartzack, Sandro","first_name":"Sandro","last_name":"Wartzack"},{"last_name":"Goetz","first_name":"Stefan","full_name":"Goetz, Stefan"}],"publication_identifier":{"issn":["2731-6564"]},"date_updated":"2026-05-13T11:50:48Z","publication_status":"published","intvolume":"         5","article_number":"56","language":[{"iso":"eng"}],"doi":"10.1007/s44245-026-00230-x","publication":"Discover Mechanical Engineering","issue":"1","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>The design of clinch joints is a cost- and time-intensive iterative process due to the complex relationships between tool and process parameters and the resulting joint properties. To address this, this contribution proposes a novel hybrid workflow that combines knowledge- and data-based approaches. Relationships are categorized based on their knowledge quality and the need for a quantitative prediction. Well-established, generalizable relationships are formalized in an ontology as design guidelines (no quantification required) or SWRL rules (quantification required) to model expert knowledge. In contrast, hard-to-formalize or not-fully-understood relationships are treated with regression models for continuous or classification models for binary criteria. These approaches are combined in a generic user interface (GUI), where the ontology can be accessed using predefined SPARQL queries to select and adapt parameters using expert knowledge. These parameters are then used as input for the metamodels. The developed workflow is evaluated on two exemplary joining tasks to illustrate, how designers can retrieve similar prior joints, adapt parameters using the encoded design rules and predict resulting joint properties under varying process conditions. In summary, the combination of ontology and metamodels facilitates the transition of trial and error into an efficient, documentable design process.</jats:p>","lang":"eng"}],"date_created":"2026-05-13T11:46:44Z","type":"journal_article"},{"date_created":"2026-07-13T11:41:47Z","type":"journal_article","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"publication":"Discover Mechanical Engineering","issue":"1","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>The service life of fatigue-loaded components that already contain manufacturing‑induced microcracks is primarily governed by the direction and the rate of fatigue-crack growth. When multiple loading components (e.g., tension, compression, shear) act simultaneously but not in temporal synchrony, out‑of‑phase mixed‑mode conditions occur. Such loadings are typical for automotive chassis parts and mechanically joined sheet‑metal assemblies. For optimized design of structural components, the crack kinking angle that occurs under mixed‑mode loading must be predicted as accurately as possible. At present, however, this is still challenging for out‑of‑phase loading conditions. To investigate the associated crack kinking behavior, a novel Compact‑Tension‑Shear‑Mini (CTSM) specimen was developed, enabling controlled generation of plane out-of-phase mixed-mode loading states. Experiments were performed under various combinations of cyclic and static mode I and mode II load components and compared with the analytical predictions of the Out-of-Phase Mixed-Mode (OMM) concept. The measured crack kinking angles showed very good agreement with the predicted values, with mean deviations of only a few degrees, demonstrating the validity and reproducibility of the approach. These findings confirm the applicability of the OMM concept for describing fatigue‑crack propagation under non‑proportional mixed‑mode loading and provide a basis for fatigue‑life assessment of clinched joints and other cyclic multi-axially loaded components.</jats:p>"}],"article_number":"113","language":[{"iso":"eng"}],"doi":"10.1007/s44245-026-00236-5","year":"2026","title":"Experimental determination of kinking angles with out-of-phase mixed-mode loading by means of a novel specimen geometry","publication_identifier":{"issn":["2731-6564"]},"author":[{"id":"57245","full_name":"Krome, Sven","last_name":"Krome","first_name":"Sven"},{"id":"291","full_name":"Kullmer, Gunter","last_name":"Kullmer","first_name":"Gunter"},{"first_name":"Deborah","last_name":"Weiß","full_name":"Weiß, Deborah"},{"full_name":"Duffe, Tobias","first_name":"Tobias","last_name":"Duffe"},{"full_name":"Ostwald, Richard","first_name":"Richard","orcid":"0000-0003-2147-8444","last_name":"Ostwald","id":"106876"}],"publication_status":"published","date_updated":"2026-08-06T10:07:30Z","intvolume":"         5","popular_science":"1","citation":{"ama":"Krome S, Kullmer G, Weiß D, Duffe T, Ostwald R. Experimental determination of kinking angles with out-of-phase mixed-mode loading by means of a novel specimen geometry. <i>Discover Mechanical Engineering</i>. 2026;5(1). doi:<a href=\"https://doi.org/10.1007/s44245-026-00236-5\">10.1007/s44245-026-00236-5</a>","bibtex":"@article{Krome_Kullmer_Weiß_Duffe_Ostwald_2026, title={Experimental determination of kinking angles with out-of-phase mixed-mode loading by means of a novel specimen geometry}, volume={5}, DOI={<a href=\"https://doi.org/10.1007/s44245-026-00236-5\">10.1007/s44245-026-00236-5</a>}, number={1113}, journal={Discover Mechanical Engineering}, publisher={Springer Science and Business Media LLC}, author={Krome, Sven and Kullmer, Gunter and Weiß, Deborah and Duffe, Tobias and Ostwald, Richard}, year={2026} }","mla":"Krome, Sven, et al. “Experimental Determination of Kinking Angles with Out-of-Phase Mixed-Mode Loading by Means of a Novel Specimen Geometry.” <i>Discover Mechanical Engineering</i>, vol. 5, no. 1, 113, Springer Science and Business Media LLC, 2026, doi:<a href=\"https://doi.org/10.1007/s44245-026-00236-5\">10.1007/s44245-026-00236-5</a>.","chicago":"Krome, Sven, Gunter Kullmer, Deborah Weiß, Tobias Duffe, and Richard Ostwald. “Experimental Determination of Kinking Angles with Out-of-Phase Mixed-Mode Loading by Means of a Novel Specimen Geometry.” <i>Discover Mechanical Engineering</i> 5, no. 1 (2026). <a href=\"https://doi.org/10.1007/s44245-026-00236-5\">https://doi.org/10.1007/s44245-026-00236-5</a>.","short":"S. Krome, G. Kullmer, D. Weiß, T. Duffe, R. Ostwald, Discover Mechanical Engineering 5 (2026).","apa":"Krome, S., Kullmer, G., Weiß, D., Duffe, T., &#38; Ostwald, R. (2026). Experimental determination of kinking angles with out-of-phase mixed-mode loading by means of a novel specimen geometry. <i>Discover Mechanical Engineering</i>, <i>5</i>(1), Article 113. <a href=\"https://doi.org/10.1007/s44245-026-00236-5\">https://doi.org/10.1007/s44245-026-00236-5</a>","ieee":"S. Krome, G. Kullmer, D. Weiß, T. Duffe, and R. Ostwald, “Experimental determination of kinking angles with out-of-phase mixed-mode loading by means of a novel specimen geometry,” <i>Discover Mechanical Engineering</i>, vol. 5, no. 1, Art. no. 113, 2026, doi: <a href=\"https://doi.org/10.1007/s44245-026-00236-5\">10.1007/s44245-026-00236-5</a>."},"project":[{"name":"TRR 285 - Project Area B","_id":"132"},{"_id":"143","name":"TRR 285 - Subproject B04"},{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"}],"_id":"66457","publisher":"Springer Science and Business Media LLC","user_id":"85414","volume":5,"status":"public"},{"abstract":[{"lang":"eng","text":"<jats:p>Investigating crack growth in sheet metal originating from clinched joints is a major part of predicting the service life of mechanically joined structures. Clinching allows different materials to be joined together. A key task in this context is to perform crack growth simulations in the vicinity of clinched joints considering different load and environmental conditions. This requires formulaic descriptions of the fatigue crack growth rate curves for the materials used. For this purpose, fatigue crack growth rate curves for different R-ratios and temperatures are determined experimentally. Generally, these fatigue crack growth rate curves can be described very well using a novel two-part exponential approach for the formulaic description of fatigue crack growth rate curves developed at Applied Mechanics of Paderborn University (FAM). In this case, three parameters are sufficient to describe the fatigue crack growth rate curves. For the material HCT590X, which is frequently used in clinched joints, it is shown as an example how the parameters vary with the R-ratio and the temperature. In addition, at high crack growth rates, a significant rise in the fatigue crack growth rate curve sometimes occurs at both low and high temperatures. To account for this feature, the two-part exponential approach can be expanded to include a third part.</jats:p>"}],"publication":"Metals","issue":"8","type":"journal_article","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"date_created":"2026-08-06T10:14:38Z","date_updated":"2026-08-06T10:17:54Z","publication_status":"published","intvolume":"        16","year":"2026","title":"Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves","author":[{"full_name":"Kullmer, Gunter","last_name":"Kullmer","first_name":"Gunter","id":"291"},{"full_name":"Krome, Sven","first_name":"Sven","last_name":"Krome","id":"57245"},{"first_name":"Deborah","last_name":"Weiß","full_name":"Weiß, Deborah","id":"45673"},{"id":"4668","full_name":"Schramm, Britta","last_name":"Schramm","first_name":"Britta"},{"id":"106876","last_name":"Ostwald","first_name":"Richard","orcid":"0000-0003-2147-8444","full_name":"Ostwald, Richard"}],"publication_identifier":{"issn":["2075-4701"]},"doi":"10.3390/met16080835","article_number":"835","language":[{"iso":"eng"}],"quality_controlled":"1","project":[{"name":"TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 - Subproject B04","_id":"143"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"citation":{"short":"G. Kullmer, S. Krome, D. Weiß, B. Schramm, R. Ostwald, Metals 16 (2026).","chicago":"Kullmer, Gunter, Sven Krome, Deborah Weiß, Britta Schramm, and Richard Ostwald. “Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves.” <i>Metals</i> 16, no. 8 (2026). <a href=\"https://doi.org/10.3390/met16080835\">https://doi.org/10.3390/met16080835</a>.","apa":"Kullmer, G., Krome, S., Weiß, D., Schramm, B., &#38; Ostwald, R. (2026). Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves. <i>Metals</i>, <i>16</i>(8), Article 835. <a href=\"https://doi.org/10.3390/met16080835\">https://doi.org/10.3390/met16080835</a>","ieee":"G. Kullmer, S. Krome, D. Weiß, B. Schramm, and R. Ostwald, “Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves,” <i>Metals</i>, vol. 16, no. 8, Art. no. 835, 2026, doi: <a href=\"https://doi.org/10.3390/met16080835\">10.3390/met16080835</a>.","ama":"Kullmer G, Krome S, Weiß D, Schramm B, Ostwald R. Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves. <i>Metals</i>. 2026;16(8). doi:<a href=\"https://doi.org/10.3390/met16080835\">10.3390/met16080835</a>","bibtex":"@article{Kullmer_Krome_Weiß_Schramm_Ostwald_2026, title={Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves}, volume={16}, DOI={<a href=\"https://doi.org/10.3390/met16080835\">10.3390/met16080835</a>}, number={8835}, journal={Metals}, publisher={MDPI AG}, author={Kullmer, Gunter and Krome, Sven and Weiß, Deborah and Schramm, Britta and Ostwald, Richard}, year={2026} }","mla":"Kullmer, Gunter, et al. “Influence of the R-Ratio and the Temperature on the Coefficients of a Novel Exponential Approach for the Formulaic Description of Fatigue Crack Growth Rate Curves.” <i>Metals</i>, vol. 16, no. 8, 835, MDPI AG, 2026, doi:<a href=\"https://doi.org/10.3390/met16080835\">10.3390/met16080835</a>."},"status":"public","user_id":"85414","volume":16,"_id":"66673","publisher":"MDPI AG"},{"type":"journal_article","date_created":"2025-09-10T07:52:43Z","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n          <jats:p>The effects of corrosion on clinched joints are not completely understood yet. Recent research indicates that galvanic corrosion can actually enhance the fatigue life of clinched joints. It is then of significant interest to investigate the effects of another corrosion phenomenon, pitting corrosion, on the fatigue behavior of clinched joints. Pitting corrosion occurs in passive metals and can lead to stress concentrations. In the present study, the effects of pitting corrosion are investigated by using Lemaitre’s two-scale fatigue model with a 2D geometry of clinched joints. A slip condition is applied as a boundary condition to simplify the clinched joint model and reduce the computational cost of solving the contact mechanics problem. Additionally, a method to determine the damage strength and the damage exponent used in the two-scale damage model is introduced. Numerical simulations reveal that pitting corrosion reduces the fatigue life of clinched joints, particularly when it occurs on the internal surface in the neck area.</jats:p>","lang":"eng"}],"project":[{"name":"TRR 285 - Subproject B03","_id":"142"},{"name":"TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"}],"publication":"Acta Mechanica","citation":{"bibtex":"@article{Chen_Harzheim_Hofmann_Wallmersperger_2025, title={Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints}, DOI={<a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>}, journal={Acta Mechanica}, publisher={Springer Science and Business Media LLC}, author={Chen, Chin and Harzheim, Sven and Hofmann, Martin and Wallmersperger, Thomas}, year={2025} }","ama":"Chen C, Harzheim S, Hofmann M, Wallmersperger T. Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints. <i>Acta Mechanica</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>","mla":"Chen, Chin, et al. “Numerical Investigation of the Effects of Pitting Corrosion on High-Cycle Fatigue of Clinched Joints.” <i>Acta Mechanica</i>, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>.","chicago":"Chen, Chin, Sven Harzheim, Martin Hofmann, and Thomas Wallmersperger. “Numerical Investigation of the Effects of Pitting Corrosion on High-Cycle Fatigue of Clinched Joints.” <i>Acta Mechanica</i>, 2025. <a href=\"https://doi.org/10.1007/s00707-025-04234-8\">https://doi.org/10.1007/s00707-025-04234-8</a>.","short":"C. Chen, S. Harzheim, M. Hofmann, T. Wallmersperger, Acta Mechanica (2025).","ieee":"C. Chen, S. Harzheim, M. Hofmann, and T. Wallmersperger, “Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints,” <i>Acta Mechanica</i>, 2025, doi: <a href=\"https://doi.org/10.1007/s00707-025-04234-8\">10.1007/s00707-025-04234-8</a>.","apa":"Chen, C., Harzheim, S., Hofmann, M., &#38; Wallmersperger, T. (2025). Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints. <i>Acta Mechanica</i>. <a href=\"https://doi.org/10.1007/s00707-025-04234-8\">https://doi.org/10.1007/s00707-025-04234-8</a>"},"doi":"10.1007/s00707-025-04234-8","user_id":"114741","language":[{"iso":"eng"}],"_id":"61161","publisher":"Springer Science and Business Media LLC","date_updated":"2026-02-24T15:11:39Z","publication_status":"published","status":"public","title":"Numerical investigation of the effects of pitting corrosion on high-cycle fatigue of clinched joints","year":"2025","author":[{"id":"114741","full_name":"Chen, Chin","first_name":"Chin","last_name":"Chen"},{"full_name":"Harzheim, Sven","last_name":"Harzheim","first_name":"Sven"},{"full_name":"Hofmann, Martin","last_name":"Hofmann","first_name":"Martin"},{"full_name":"Wallmersperger, Thomas","first_name":"Thomas","last_name":"Wallmersperger"}],"publication_identifier":{"issn":["0001-5970","1619-6937"]}},{"author":[{"full_name":"Harzheim, Sven","last_name":"Harzheim","first_name":"Sven"},{"id":"114741","last_name":"Chen","first_name":"Chin","full_name":"Chen, Chin"},{"full_name":"Hollmer, Katharina","first_name":"Katharina","last_name":"Hollmer"},{"first_name":"Martin","last_name":"Hofmann","full_name":"Hofmann, Martin"},{"full_name":"Zimmermann, Martina","last_name":"Zimmermann","first_name":"Martina"},{"full_name":"Wallmersperger, Thomas","first_name":"Thomas","last_name":"Wallmersperger"}],"publication_identifier":{"issn":["0001-5970","1619-6937"]},"title":"Numerical investigation of pitting corrosion in clinched joints","year":"2025","status":"public","publication_status":"published","date_updated":"2026-02-24T15:12:17Z","_id":"61411","language":[{"iso":"eng"}],"publisher":"Springer Science and Business Media LLC","user_id":"114741","doi":"10.1007/s00707-025-04248-2","citation":{"bibtex":"@article{Harzheim_Chen_Hollmer_Hofmann_Zimmermann_Wallmersperger_2025, title={Numerical investigation of pitting corrosion in clinched joints}, DOI={<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>}, journal={Acta Mechanica}, publisher={Springer Science and Business Media LLC}, author={Harzheim, Sven and Chen, Chin and Hollmer, Katharina and Hofmann, Martin and Zimmermann, Martina and Wallmersperger, Thomas}, year={2025} }","ama":"Harzheim S, Chen C, Hollmer K, Hofmann M, Zimmermann M, Wallmersperger T. Numerical investigation of pitting corrosion in clinched joints. <i>Acta Mechanica</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>","mla":"Harzheim, Sven, et al. “Numerical Investigation of Pitting Corrosion in Clinched Joints.” <i>Acta Mechanica</i>, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>.","short":"S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, T. Wallmersperger, Acta Mechanica (2025).","chicago":"Harzheim, Sven, Chin Chen, Katharina Hollmer, Martin Hofmann, Martina Zimmermann, and Thomas Wallmersperger. “Numerical Investigation of Pitting Corrosion in Clinched Joints.” <i>Acta Mechanica</i>, 2025. <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">https://doi.org/10.1007/s00707-025-04248-2</a>.","ieee":"S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, and T. Wallmersperger, “Numerical investigation of pitting corrosion in clinched joints,” <i>Acta Mechanica</i>, 2025, doi: <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>.","apa":"Harzheim, S., Chen, C., Hollmer, K., Hofmann, M., Zimmermann, M., &#38; Wallmersperger, T. (2025). Numerical investigation of pitting corrosion in clinched joints. <i>Acta Mechanica</i>. <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">https://doi.org/10.1007/s00707-025-04248-2</a>"},"publication":"Acta Mechanica","project":[{"_id":"132","name":"TRR 285 - Project Area B"},{"name":"TRR 285 - Subproject B03","_id":"142"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n          <jats:p>The effect of corrosion on mechanically joined components is not well understood. While recent research shows that a brief exposure of clinched specimens to a salt spray environment improves the specimens’ fatigue life, other research shows a decrease in load bearing capabilities with increasing corrosion times. These studies primarily focus on galvanic corrosion. It is not entirely clear how other corrosion phenomena, such as pitting corrosion, affect the fatigue life of clinched joints. In this work, a numerical model is used, which is able to simulate corrosion pit growth in EN AW-6014. The experimental polarization data of EN AW-6014 are used directly in the calculation of the interface kinetics parameter of the model.</jats:p>","lang":"eng"}],"date_created":"2025-09-23T11:58:18Z","type":"journal_article"},{"project":[{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"name":"TRR 285 - Project Area B","_id":"132"},{"_id":"140","name":"TRR 285 - Subproject B01"},{"name":"TRR 285 - Subproject B05","_id":"144"}],"citation":{"ieee":"J.-M. Einwag, C. Steinfelder, S. Wartzack, A. Brosius, and S. Goetz, “From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties,” <i>Journal of Manufacturing Processes</i>, vol. 154, pp. 179–191, 2025, doi: <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>.","apa":"Einwag, J.-M., Steinfelder, C., Wartzack, S., Brosius, A., &#38; Goetz, S. (2025). From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties. <i>Journal of Manufacturing Processes</i>, <i>154</i>, 179–191. <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">https://doi.org/10.1016/j.jmapro.2025.09.059</a>","mla":"Einwag, Jonathan-Markus, et al. “From Simulation to Metamodel to Experiment: Evaluating the Prediction Accuracy of Polynomial Regression Models for Clinch Joint Properties.” <i>Journal of Manufacturing Processes</i>, vol. 154, Elsevier BV, 2025, pp. 179–91, doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>.","bibtex":"@article{Einwag_Steinfelder_Wartzack_Brosius_Goetz_2025, title={From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties}, volume={154}, DOI={<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>}, journal={Journal of Manufacturing Processes}, publisher={Elsevier BV}, author={Einwag, Jonathan-Markus and Steinfelder, Christian and Wartzack, Sandro and Brosius, Alexander and Goetz, Stefan}, year={2025}, pages={179–191} }","chicago":"Einwag, Jonathan-Markus, Christian Steinfelder, Sandro Wartzack, Alexander Brosius, and Stefan Goetz. “From Simulation to Metamodel to Experiment: Evaluating the Prediction Accuracy of Polynomial Regression Models for Clinch Joint Properties.” <i>Journal of Manufacturing Processes</i> 154 (2025): 179–91. <a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">https://doi.org/10.1016/j.jmapro.2025.09.059</a>.","ama":"Einwag J-M, Steinfelder C, Wartzack S, Brosius A, Goetz S. From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties. <i>Journal of Manufacturing Processes</i>. 2025;154:179-191. doi:<a href=\"https://doi.org/10.1016/j.jmapro.2025.09.059\">10.1016/j.jmapro.2025.09.059</a>","short":"J.-M. Einwag, C. Steinfelder, S. Wartzack, A. Brosius, S. Goetz, Journal of Manufacturing Processes 154 (2025) 179–191."},"status":"public","user_id":"107109","volume":154,"page":"179-191","_id":"61524","publisher":"Elsevier BV","publication":"Journal of Manufacturing Processes","type":"journal_article","department":[{"_id":"43"},{"_id":"157"}],"date_created":"2025-10-06T07:37:24Z","date_updated":"2025-11-12T08:35:35Z","publication_status":"published","intvolume":"       154","year":"2025","title":"From simulation to metamodel to experiment: Evaluating the prediction accuracy of polynomial regression models for clinch joint properties","publication_identifier":{"issn":["1526-6125"]},"author":[{"full_name":"Einwag, Jonathan-Markus","first_name":"Jonathan-Markus","last_name":"Einwag"},{"full_name":"Steinfelder, Christian","last_name":"Steinfelder","first_name":"Christian"},{"full_name":"Wartzack, Sandro","last_name":"Wartzack","first_name":"Sandro"},{"full_name":"Brosius, Alexander","first_name":"Alexander","last_name":"Brosius"},{"last_name":"Goetz","first_name":"Stefan","full_name":"Goetz, Stefan"}],"doi":"10.1016/j.jmapro.2025.09.059","language":[{"iso":"eng"}]},{"language":[{"iso":"ger"}],"publication_identifier":{"isbn":["978-3-88355-454-9"]},"author":[{"full_name":"Lüder, Stephan","last_name":"Lüder","first_name":"Stephan","orcid":"https://orcid.org/0000-0002-9086-3031","id":"104468"},{"orcid":"0009-0001-1904-7023","first_name":"Eugen","last_name":"Wolf","full_name":"Wolf, Eugen","id":"104464"},{"first_name":"Alexander","last_name":"Brosius","full_name":"Brosius, Alexander"},{"first_name":"Hans Christian","last_name":"Schmale","full_name":"Schmale, Hans Christian"}],"corporate_editor":["Deutsche Gesellschaft für Materialkunde e.V. (DGM)"],"title":"Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen","year":"2025","date_updated":"2025-12-11T08:21:34Z","publication_status":"published","date_created":"2025-12-10T13:22:14Z","department":[{"_id":"630"}],"type":"conference","keyword":["Clinchen","Mehrfachanordnung","Torsionsprüfung","Tragfähigkeit"],"publication":"43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025","abstract":[{"lang":"ger","text":"Zur Prüfung der mechanischen Eigenschaften von mechanisch gefügten Verbindungen wird gemäß der Normung in der Regel nur ein Fügepunkt verwendet. In diesem Beitrag wird die Prüfung von Mehrfachanordnungen von Clinchpunkten in einem modifizierten Torsionsversuch beschrieben. Bei den Fügeverbindungen der Proben aus artgleichen Werkstoffen handelt es sich um zwei Varianten symmetrischer Mehrfachanordnungen von vier Clinchpunkten mit zwei unterschiedlichen Fügepunktabständen, was zu zwei verschiedenen Längen des Wirkabstands in Bezug auf die Rotationsachse im Torsionsversuch führt. Das erste Teilziel der Untersuchung ist die Bewertung der Tragfähigkeit der Mehrfachanordnungen von Clinchpunkten unter Torsionsbeanspruchung. Ein zweites Teilziel ist die Analyse des Einflusses eines zusätzlichen Clinchpunkts, der als Drehgelenk in der Rotationsachse wirkt, auf das Tragverhalten und das Versagensverhalten der Fügeverbindung. Aus den erarbeiteten Resultaten werden Erkenntnisse zum Tragverhalten der Fügeverbindungen abgeleitet und eine Überschlagsrechnung vorgestellt, um Richtlinien zur konstruktiven Auslegung von Bauteilen aufzustellen."}],"extern":"1","_id":"63020","page":"478 - 483","editor":[{"first_name":"Martina","last_name":"Zimmermann","full_name":"Zimmermann, Martina"}],"user_id":"104464","conference":{"end_date":"2025-11-28","location":"Dresden","start_date":"2025-11-27","name":"43. Vortrags- und Diskussionstagung \"Werkstoffprüfung 2025\": Werkstoffe und Bauteile auf dem Prüfstand"},"status":"public","place":"Sankt Augustin","citation":{"bibtex":"@inproceedings{Lüder_Wolf_Brosius_Schmale_2025, place={Sankt Augustin}, title={Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen}, booktitle={43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025}, author={Lüder, Stephan and Wolf, Eugen and Brosius, Alexander and Schmale, Hans Christian}, editor={Zimmermann, Martina and Deutsche Gesellschaft für Materialkunde e.V. (DGM)}, year={2025}, pages={478–483} }","ama":"Lüder S, Wolf E, Brosius A, Schmale HC. Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen. In: Zimmermann M, Deutsche Gesellschaft für Materialkunde e.V. (DGM), eds. <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>. ; 2025:478-483.","mla":"Lüder, Stephan, et al. “Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen.” <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, edited by Martina Zimmermann and Deutsche Gesellschaft für Materialkunde e.V. (DGM), 2025, pp. 478–83.","chicago":"Lüder, Stephan, Eugen Wolf, Alexander Brosius, and Hans Christian Schmale. “Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen.” In <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, edited by Martina Zimmermann and Deutsche Gesellschaft für Materialkunde e.V. (DGM), 478–83. Sankt Augustin, 2025.","short":"S. Lüder, E. Wolf, A. Brosius, H.C. Schmale, in: M. Zimmermann, Deutsche Gesellschaft für Materialkunde e.V. (DGM) (Eds.), 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025, Sankt Augustin, 2025, pp. 478–483.","ieee":"S. Lüder, E. Wolf, A. Brosius, and H. C. Schmale, “Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen,” in <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, Dresden, 2025, pp. 478–483.","apa":"Lüder, S., Wolf, E., Brosius, A., &#38; Schmale, H. C. (2025). Modifizierter Torsionsversuch zur Untersuchung des Tragverhaltens von Clinchpunktmehrfachanordnungen. In M. Zimmermann &#38; Deutsche Gesellschaft für Materialkunde e.V. (DGM) (Eds.), <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i> (pp. 478–483)."},"project":[{"name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130"},{"name":"TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 - Subproject A04","_id":"138"},{"_id":"132","name":"TRR 285 - Project Area B"},{"_id":"140","name":"TRR 285 - Subproject B01"}],"quality_controlled":"1"},{"author":[{"full_name":"Wolf, Eugen","first_name":"Eugen","last_name":"Wolf"},{"full_name":"Hollmer, Katharina","first_name":"Katharina","last_name":"Hollmer"},{"last_name":"Zimmermann","first_name":"Martina","full_name":"Zimmermann, Martina"},{"full_name":"Brosius, Alexander","first_name":"Alexander","last_name":"Brosius"}],"publication_identifier":{"isbn":["978-3-88355-454-9"]},"year":"2025","title":"Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung","date_updated":"2025-12-11T08:21:38Z","publication_status":"published","language":[{"iso":"ger"}],"publication":"43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025","abstract":[{"lang":"ger","text":"Durch eine zunehmende Verbreitung von Clinchverbindungen in industriellen Anwendungen spielt die Zuverlässigkeit der Fügeverbindung eine immer größere Rolle. Insbesondere Mehrfachanordnungen von Clinchpunkten wurden bisher nur selten untersucht. In der vorliegenden Arbeit wird die Zuverlässigkeit von gefügten Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung untersucht. Ziel ist es, die Wechselwirkung benachbarter Clinchpunkte und deren Einfluss auf die Ermüdungslebensdauer zu untersuchen. Dazu wurden Proben mit variierenden Fügepunktabständen hergestellt und in Versuchsreihen zyklisch belastet. Die Resultate zeigen, dass die räumliche Anordnung der Clinchpunkte das Ermüdungsverhalten beeinflusst. Es wurde festgestellt, dass bei Mehrfachanordnungen sowohl der Fügepunktabstand als auch der Abstand der Fügepunkte zum Bauteilrand in Belastungsrichtung einen Einflussfaktor darstellen. Die vorliegende Arbeit leistet somit einen Beitrag zur Lebensdauervorhersage gefügter Strukturen und bildet eine Grundlage für weiterführende Untersuchungen zu Gestaltungsempfehlungen."}],"date_created":"2025-12-01T13:06:17Z","department":[{"_id":"630"}],"keyword":["Clinchverbindungen","Zyklische Beanspruchung","Versagensverhalten"],"type":"conference","conference":{"start_date":"2025-11-25","name":"43. Vortrags- und Diskussionstagung \"Werkstoffprüfung 2025\": Werkstoffe und Bauteile auf dem Prüfstand","location":"Dresden","end_date":"2025-11-26"},"status":"public","_id":"62724","publisher":"Deutsche Gesellschaft für Materialkunde e.V. (DGM)","page":"317 - 322","editor":[{"full_name":"Zimmermann, Martina","first_name":"Martina","last_name":"Zimmermann"}],"user_id":"104464","citation":{"mla":"Wolf, Eugen, et al. “Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung.” <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, edited by Martina Zimmermann, Deutsche Gesellschaft für Materialkunde e.V. (DGM), 2025, pp. 317–22.","apa":"Wolf, E., Hollmer, K., Zimmermann, M., &#38; Brosius, A. (2025). Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung. In M. Zimmermann (Ed.), <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i> (pp. 317–322). Deutsche Gesellschaft für Materialkunde e.V. (DGM).","ieee":"E. Wolf, K. Hollmer, M. Zimmermann, and A. Brosius, “Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung,” in <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, Dresden, 2025, pp. 317–322.","chicago":"Wolf, Eugen, Katharina Hollmer, Martina Zimmermann, and Alexander Brosius. “Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung.” In <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>, edited by Martina Zimmermann, 317–22. Deutsche Gesellschaft für Materialkunde e.V. (DGM), 2025.","ama":"Wolf E, Hollmer K, Zimmermann M, Brosius A. Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung. In: Zimmermann M, ed. <i>43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025</i>. Deutsche Gesellschaft für Materialkunde e.V. (DGM); 2025:317-322.","short":"E. Wolf, K. Hollmer, M. Zimmermann, A. Brosius, in: M. Zimmermann (Ed.), 43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025, Deutsche Gesellschaft für Materialkunde e.V. (DGM), 2025, pp. 317–322.","bibtex":"@inproceedings{Wolf_Hollmer_Zimmermann_Brosius_2025, title={Untersuchung der Zuverlässigkeit gefügter Proben mit einer Mehrfachanordnung von Clinchpunkten unter zyklischer Beanspruchung}, booktitle={43. Vortrags- und Diskussionstagung Werkstoffprüfung 2025}, publisher={Deutsche Gesellschaft für Materialkunde e.V. (DGM)}, author={Wolf, Eugen and Hollmer, Katharina and Zimmermann, Martina and Brosius, Alexander}, editor={Zimmermann, Martina}, year={2025}, pages={317–322} }"},"project":[{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"},{"name":"TRR 285 - Project Area B","_id":"132"},{"_id":"140","name":"TRR 285 - Subproject B01"},{"_id":"141","name":"TRR 285 - Subproject B02"}],"quality_controlled":"1"},{"type":"conference","date_created":"2025-06-12T15:03:22Z","abstract":[{"lang":"eng","text":"<jats:p>Abstract. The growing significance of lightweight design, reveals drawbacks of conventional joining processes such as welding, which are known to consume a considerable amount of energy. This fosters the use of mechanical joining processes including clinching. However, the lack of universally applicable design methods results in a cost- and time-intensive design process. The utilization of machine learning methods can overcome these drawbacks. To ensure a reliable clinch joint design, inherent uncertainties of the design parameter such as tool deviations need to be considered in the design process. Varying distributions of design parameters, due to changes in the manufacturing process, can lead to high-computational effort in recalculating the resulting clinch joint properties with numerical simulations. Current metamodel-based methods for consideration of inherent uncertainties within the design parameters do not investigate the transferability of metamodels to different distributions of design parameters, which can lead to incorrect predictions. Therefore, this contribution investigates the performance of several metamodels on differently distributed design parameters. The obtained results indicate that metamodels demonstrate the best performance when training and evaluation distributions are identical and that polynomial regression models perform best on disparate distributions, when trained on uniform distributions.</jats:p>"}],"project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","grant_number":"418701707","_id":"130"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"name":"TRR 285 – B05: TRR 285 - Subproject B05","_id":"144"}],"publication":"Materials Research Proceedings","citation":{"short":"J.-M. Einwag, Y. Mayer, S. Goetz, S. Wartzack, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","chicago":"Einwag, Jonathan-Markus, Yannik Mayer, Stefan Goetz, and Sandro Wartzack. “Impact of the Parameter Distribution on the Predictive Quality of Metamodels for Clinch Joint Properties.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-35\">https://doi.org/10.21741/9781644903551-35</a>.","ieee":"J.-M. Einwag, Y. Mayer, S. Goetz, and S. Wartzack, “Impact of the parameter distribution on the predictive quality of metamodels for clinch joint properties,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-35\">10.21741/9781644903551-35</a>.","apa":"Einwag, J.-M., Mayer, Y., Goetz, S., &#38; Wartzack, S. (2025). Impact of the parameter distribution on the predictive quality of metamodels for clinch joint properties. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-35\">https://doi.org/10.21741/9781644903551-35</a>","bibtex":"@inproceedings{Einwag_Mayer_Goetz_Wartzack_2025, title={Impact of the parameter distribution on the predictive quality of metamodels for clinch joint properties}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-35\">10.21741/9781644903551-35</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Einwag, Jonathan-Markus and Mayer, Yannik and Goetz, Stefan and Wartzack, Sandro}, year={2025} }","ama":"Einwag J-M, Mayer Y, Goetz S, Wartzack S. Impact of the parameter distribution on the predictive quality of metamodels for clinch joint properties. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-35\">10.21741/9781644903551-35</a>","mla":"Einwag, Jonathan-Markus, et al. “Impact of the Parameter Distribution on the Predictive Quality of Metamodels for Clinch Joint Properties.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-35\">10.21741/9781644903551-35</a>."},"doi":"10.21741/9781644903551-35","user_id":"107109","volume":52,"language":[{"iso":"eng"}],"_id":"60198","publisher":"Materials Research Forum LLC","date_updated":"2025-06-12T15:06:41Z","publication_status":"published","intvolume":"        52","status":"public","title":"Impact of the parameter distribution on the predictive quality of metamodels for clinch joint properties","year":"2025","publication_identifier":{"issn":["2474-395X"]},"author":[{"full_name":"Einwag, Jonathan-Markus","last_name":"Einwag","first_name":"Jonathan-Markus"},{"full_name":"Mayer, Yannik","first_name":"Yannik","last_name":"Mayer"},{"full_name":"Goetz, Stefan","first_name":"Stefan","last_name":"Goetz"},{"full_name":"Wartzack, Sandro","first_name":"Sandro","last_name":"Wartzack"}]},{"date_created":"2025-05-13T05:41:58Z","department":[{"_id":"630"}],"type":"conference","keyword":["Joining","Sheet Metal","Stiffness","Clinching"],"publication":"MATEC Web of Conferences","abstract":[{"lang":"eng","text":"This paper focuses on the failure behavior of clinched specimens with various stiffnesses under shear tensile loading. The primary objective is to assess the influence of the specimen stiffness with an arrangement of clinched joints. The specimen stiffness depends on several variables. In addition to the material selection, the specific choice of geometry and the design of the clinched joints must also be taken into account. A number of experiments was conducted to investigate the failure behavior of specimens with an arrangement of three clinched joints under shear tensile loading. These configurations were subjected to shear tensile tests, with force displacement curves recorded for each specimen to provide a detailed characterization of their structural response. The stiffness is modified by altering the specimen width, which has marginal impact on the maximum force. The experimental findings indicate that reducing the specimen stiffness results in a shift in the type of stress, with the failure behavior becoming increasingly influenced by bending stress. These results offer important insights for the design of clinched joint assemblies, indicating that it is feasible to achieve the desired properties by changing the specimen stiffness."}],"language":[{"iso":"eng"}],"article_number":"01080","doi":"10.1051/matecconf/202540801080","author":[{"full_name":"Wolf, Eugen","last_name":"Wolf","first_name":"Eugen"},{"first_name":"Alexander","last_name":"Brosius","full_name":"Brosius, Alexander"}],"publication_identifier":{"issn":["2261-236X"]},"year":"2025","title":"Investigation failure behavior in the shear tensile test with variety of specimen stiffness","intvolume":"       408","publication_status":"published","date_updated":"2025-06-23T07:25:21Z","citation":{"chicago":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Variety of Specimen Stiffness.” In <i>MATEC Web of Conferences</i>, Vol. 408. EDP Sciences, 2025. <a href=\"https://doi.org/10.1051/matecconf/202540801080\">https://doi.org/10.1051/matecconf/202540801080</a>.","short":"E. Wolf, A. Brosius, in: MATEC Web of Conferences, EDP Sciences, 2025.","apa":"Wolf, E., &#38; Brosius, A. (2025). Investigation failure behavior in the shear tensile test with variety of specimen stiffness. <i>MATEC Web of Conferences</i>, <i>408</i>, Article 01080. <a href=\"https://doi.org/10.1051/matecconf/202540801080\">https://doi.org/10.1051/matecconf/202540801080</a>","ieee":"E. Wolf and A. Brosius, “Investigation failure behavior in the shear tensile test with variety of specimen stiffness,” in <i>MATEC Web of Conferences</i>, Lisbon, 2025, vol. 408, doi: <a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>.","ama":"Wolf E, Brosius A. Investigation failure behavior in the shear tensile test with variety of specimen stiffness. In: <i>MATEC Web of Conferences</i>. Vol 408. EDP Sciences; 2025. doi:<a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>","bibtex":"@inproceedings{Wolf_Brosius_2025, title={Investigation failure behavior in the shear tensile test with variety of specimen stiffness}, volume={408}, DOI={<a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>}, number={01080}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Wolf, Eugen and Brosius, Alexander}, year={2025} }","mla":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Variety of Specimen Stiffness.” <i>MATEC Web of Conferences</i>, vol. 408, 01080, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/matecconf/202540801080\">10.1051/matecconf/202540801080</a>."},"project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"}],"_id":"59873","publisher":"EDP Sciences","volume":408,"user_id":"104464","conference":{"end_date":"2025-06-05","start_date":"2025-06-01","name":"44th Conference of the International Deep Drawing Research Group","location":"Lisbon"},"status":"public"},{"department":[{"_id":"630"}],"type":"conference","keyword":["Joining","Sheet Metal","Clinching"],"date_created":"2025-04-10T11:28:28Z","abstract":[{"lang":"eng","text":"This paper focuses on the failure behavior of specimens with various configurations of clinched joints under shear tensile loading. The primary objective is to assess the influence of the joining direction and the spatial arrangement of clinched joints on their mechanical performance. A number of experiments was conducted, focusing on three clinched joints arranged in different configurations, each varying in terms of joining direction and spacing. These configurations were subjected to shear tensile tests, with force-displacement curves recorded for each sample to provide a detailed characterization of their structural response. The experimental findings indicate that the specific arrangement of the clinched joints, in terms of joining direction, has a marginal impact on the overall failure behavior. This suggests that intricate modifications to the joining direction are unnecessary to achieve improved mechanical performance in such applications. These results offer valuable insights for the design of clinched joint assemblies, indicating that simplified joining strategies may suffice without compromising structural integrity under shear loading."}],"publication":"Materials Research Proceedings","doi":"10.21741/9781644903551-11","language":[{"iso":"eng"}],"intvolume":"        52","date_updated":"2025-06-23T07:26:23Z","publication_status":"published","author":[{"full_name":"Wolf, Eugen","last_name":"Wolf","first_name":"Eugen"},{"full_name":"Brosius, Alexander","first_name":"Alexander","last_name":"Brosius"}],"publication_identifier":{"issn":["2474-395X"]},"title":"Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints","year":"2025","project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"_id":"140","name":"TRR 285 – B01: TRR 285 - Subproject B01"}],"citation":{"short":"E. Wolf, A. Brosius, in: Materials Research Proceedings, Materials Research Forum LLC, 2025, pp. 86–92.","chicago":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Respect to the Arrangements of Clinched Joints.” In <i>Materials Research Proceedings</i>, 52:86–92. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-11\">https://doi.org/10.21741/9781644903551-11</a>.","ieee":"E. Wolf and A. Brosius, “Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints,” in <i>Materials Research Proceedings</i>, Paderborn, 2025, vol. 52, pp. 86–92, doi: <a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>.","apa":"Wolf, E., &#38; Brosius, A. (2025). Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints. <i>Materials Research Proceedings</i>, <i>52</i>, 86–92. <a href=\"https://doi.org/10.21741/9781644903551-11\">https://doi.org/10.21741/9781644903551-11</a>","bibtex":"@inproceedings{Wolf_Brosius_2025, title={Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Wolf, Eugen and Brosius, Alexander}, year={2025}, pages={86–92} }","ama":"Wolf E, Brosius A. Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025:86-92. doi:<a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>","mla":"Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the Shear Tensile Test with Respect to the Arrangements of Clinched Joints.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, pp. 86–92, doi:<a href=\"https://doi.org/10.21741/9781644903551-11\">10.21741/9781644903551-11</a>."},"volume":52,"user_id":"104464","_id":"59485","publisher":"Materials Research Forum LLC","page":" 86 - 92","conference":{"location":"Paderborn","name":"21st International Conference on Sheet Metal","start_date":"2025-04-01","end_date":"2025-04-03"},"status":"public"},{"type":"journal_article","keyword":["Joining","Forming","Property adjustment"],"department":[{"_id":"630"}],"date_created":"2025-06-23T07:47:56Z","abstract":[{"text":"Non-rotationally symmetrical joints can have different properties that can be controlled by the joint orientation. This hypothesis is tested using a Reuleaux triangle joint geometry. A tool design is carried out, followed by a numerical sensitivity analysis of the tool geometry. Initial tools were manufactured for experimental investigations and then adapted based on the findings of the sensitivity analysis. The joints are characterized by micrographs, 3D scans, shear tensile tests, head tensile tests and three-point bending tests and compared with a round geometry. The analysis confirms the hypothesis. Thus, joints with adaptable properties can be produced with one tool set.","lang":"eng"}],"project":[{"name":"TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"}],"publication":"CIRP Annals","citation":{"mla":"Steinfelder, Christian, et al. “A New Joint with Versatile Properties Based on a Reuleaux Triangle Geometry.” <i>CIRP Annals</i>, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.cirp.2025.03.002\">10.1016/j.cirp.2025.03.002</a>.","bibtex":"@article{Steinfelder_Acksteiner_Brosius_2025, title={A new joint with versatile properties based on a Reuleaux triangle geometry}, DOI={<a href=\"https://doi.org/10.1016/j.cirp.2025.03.002\">10.1016/j.cirp.2025.03.002</a>}, journal={CIRP Annals}, publisher={Elsevier BV}, author={Steinfelder, Christian and Acksteiner, Clemens and Brosius, Alexander}, year={2025} }","ama":"Steinfelder C, Acksteiner C, Brosius A. A new joint with versatile properties based on a Reuleaux triangle geometry. <i>CIRP Annals</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1016/j.cirp.2025.03.002\">10.1016/j.cirp.2025.03.002</a>","ieee":"C. Steinfelder, C. Acksteiner, and A. Brosius, “A new joint with versatile properties based on a Reuleaux triangle geometry,” <i>CIRP Annals</i>, 2025, doi: <a href=\"https://doi.org/10.1016/j.cirp.2025.03.002\">10.1016/j.cirp.2025.03.002</a>.","apa":"Steinfelder, C., Acksteiner, C., &#38; Brosius, A. (2025). A new joint with versatile properties based on a Reuleaux triangle geometry. <i>CIRP Annals</i>. <a href=\"https://doi.org/10.1016/j.cirp.2025.03.002\">https://doi.org/10.1016/j.cirp.2025.03.002</a>","short":"C. Steinfelder, C. Acksteiner, A. Brosius, CIRP Annals (2025).","chicago":"Steinfelder, Christian, Clemens Acksteiner, and Alexander Brosius. “A New Joint with Versatile Properties Based on a Reuleaux Triangle Geometry.” <i>CIRP Annals</i>, 2025. <a href=\"https://doi.org/10.1016/j.cirp.2025.03.002\">https://doi.org/10.1016/j.cirp.2025.03.002</a>."},"user_id":"104464","doi":"10.1016/j.cirp.2025.03.002","_id":"60299","language":[{"iso":"eng"}],"publisher":"Elsevier BV","publication_status":"published","date_updated":"2025-06-23T08:00:05Z","status":"public","title":"A new joint with versatile properties based on a Reuleaux triangle geometry","year":"2025","publication_identifier":{"issn":["0007-8506"]},"author":[{"full_name":"Steinfelder, Christian","last_name":"Steinfelder","first_name":"Christian"},{"last_name":"Acksteiner","first_name":"Clemens","full_name":"Acksteiner, Clemens"},{"last_name":"Brosius","first_name":"Alexander","full_name":"Brosius, Alexander"}]},{"type":"research_data","department":[{"_id":"143"}],"date_created":"2026-01-27T15:33:53Z","project":[{"name":"TRR 285 - Project Area B","_id":"132"}],"citation":{"ieee":"D. Weiß, S. Krome, T. Duffe, G. Kullmer, and R. Ostwald, <i>Experimentelle Ermittlung von Rissablenkungswinkeln bei außerphasiger Mixed-Mode-Belastung mittels einer neuartigen Probengeometrie</i>. LibreCat University, 2025.","mla":"Weiß, Deborah, et al. <i>Experimentelle Ermittlung von Rissablenkungswinkeln Bei Außerphasiger Mixed-Mode-Belastung Mittels Einer Neuartigen Probengeometrie</i>. LibreCat University, 2025, doi:<a href=\"https://doi.org/10.48447/BR-2025-490\">https://doi.org/10.48447/BR-2025-490</a>.","apa":"Weiß, D., Krome, S., Duffe, T., Kullmer, G., &#38; Ostwald, R. (2025). <i>Experimentelle Ermittlung von Rissablenkungswinkeln bei außerphasiger Mixed-Mode-Belastung mittels einer neuartigen Probengeometrie</i>. LibreCat University. <a href=\"https://doi.org/10.48447/BR-2025-490\">https://doi.org/10.48447/BR-2025-490</a>","bibtex":"@book{Weiß_Krome_Duffe_Kullmer_Ostwald_2025, title={Experimentelle Ermittlung von Rissablenkungswinkeln bei außerphasiger Mixed-Mode-Belastung mittels einer neuartigen Probengeometrie}, DOI={<a href=\"https://doi.org/10.48447/BR-2025-490\">https://doi.org/10.48447/BR-2025-490</a>}, publisher={LibreCat University}, author={Weiß, Deborah and Krome, Sven and Duffe, Tobias and Kullmer, Gunter and Ostwald, Richard}, year={2025} }","short":"D. Weiß, S. Krome, T. Duffe, G. Kullmer, R. Ostwald, Experimentelle Ermittlung von Rissablenkungswinkeln Bei Außerphasiger Mixed-Mode-Belastung Mittels Einer Neuartigen Probengeometrie, LibreCat University, 2025.","ama":"Weiß D, Krome S, Duffe T, Kullmer G, Ostwald R. <i>Experimentelle Ermittlung von Rissablenkungswinkeln Bei Außerphasiger Mixed-Mode-Belastung Mittels Einer Neuartigen Probengeometrie</i>. LibreCat University; 2025. doi:<a href=\"https://doi.org/10.48447/BR-2025-490\">https://doi.org/10.48447/BR-2025-490</a>","chicago":"Weiß, Deborah, Sven Krome, Tobias Duffe, Gunter Kullmer, and Richard Ostwald. <i>Experimentelle Ermittlung von Rissablenkungswinkeln Bei Außerphasiger Mixed-Mode-Belastung Mittels Einer Neuartigen Probengeometrie</i>. LibreCat University, 2025. <a href=\"https://doi.org/10.48447/BR-2025-490\">https://doi.org/10.48447/BR-2025-490</a>."},"doi":"https://doi.org/10.48447/BR-2025-490","user_id":"57245","_id":"63764","publisher":"LibreCat University","date_updated":"2026-03-30T10:59:38Z","year":"2025","status":"public","title":"Experimentelle Ermittlung von Rissablenkungswinkeln bei außerphasiger Mixed-Mode-Belastung mittels einer neuartigen Probengeometrie","author":[{"full_name":"Weiß, Deborah","last_name":"Weiß","first_name":"Deborah","id":"45673"},{"id":"57245","last_name":"Krome","first_name":"Sven","full_name":"Krome, Sven"},{"id":"41322","first_name":"Tobias","last_name":"Duffe","full_name":"Duffe, Tobias"},{"id":"291","full_name":"Kullmer, Gunter","first_name":"Gunter","last_name":"Kullmer"},{"id":"106876","orcid":"0000-0003-2147-8444","first_name":"Richard","last_name":"Ostwald","full_name":"Ostwald, Richard"}]},{"issue":"1","publication":"Applied Sciences","abstract":[{"text":"The accurate prediction of crack initiation and propagation is essential for assessing the structural integrity of mechanically joined components and other complex assemblies. To overcome the limitations of existing finite element tools, a modular Python framework has been developed to automate three-dimensional crack growth simulations. The program combines geometric reconstruction, adaptive remeshing, and the numerical evaluation of fracture mechanics parameters within a single, fully automated workflow. The framework builds on open-source components and remains solver-independent, enabling straightforward integration with commercial or research finite element codes. A dedicated sequence of modules performs all required steps, from mesh separation and crack insertion to local submodeling, stress and displacement mapping, and iterative crack-front update, without manual interaction. The methodology was verified using a mini-compact tension (Mini-CT) specimen as a benchmark case. The numerical results demonstrate the accurate reproduction of stress intensity factors and energy release rates while achieving high computational efficiency through localized refinement. The developed approach provides a robust basis for crack growth simulations of geometrically complex or residual stress-affected structures. Its high degree of automation and flexibility makes it particularly suited for analyzing cracks in clinched and riveted joints, supporting the predictive design and durability assessment of joined lightweight structures.","lang":"eng"}],"date_created":"2026-01-20T08:47:40Z","type":"journal_article","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"title":"Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D","year":"2025","publication_identifier":{"issn":["2076-3417"]},"author":[{"id":"57245","full_name":"Krome, Sven","last_name":"Krome","first_name":"Sven"},{"full_name":"Duffe, Tobias","first_name":"Tobias","last_name":"Duffe","id":"41322"},{"full_name":"Kullmer, Gunter","last_name":"Kullmer","first_name":"Gunter","id":"291"},{"full_name":"Schramm, Britta","first_name":"Britta","last_name":"Schramm","id":"4668"},{"first_name":"Richard","last_name":"Ostwald","orcid":"0000-0003-2147-8444","full_name":"Ostwald, Richard","id":"106876"}],"date_updated":"2026-05-12T12:46:22Z","publication_status":"published","intvolume":"        16","article_number":"384","language":[{"iso":"eng"}],"doi":"10.3390/app16010384","citation":{"short":"S. Krome, T. Duffe, G. Kullmer, B. Schramm, R. Ostwald, Applied Sciences 16 (2025).","chicago":"Krome, Sven, Tobias Duffe, Gunter Kullmer, Britta Schramm, and Richard Ostwald. “Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D.” <i>Applied Sciences</i> 16, no. 1 (2025). <a href=\"https://doi.org/10.3390/app16010384\">https://doi.org/10.3390/app16010384</a>.","apa":"Krome, S., Duffe, T., Kullmer, G., Schramm, B., &#38; Ostwald, R. (2025). Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D. <i>Applied Sciences</i>, <i>16</i>(1), Article 384. <a href=\"https://doi.org/10.3390/app16010384\">https://doi.org/10.3390/app16010384</a>","ieee":"S. Krome, T. Duffe, G. Kullmer, B. Schramm, and R. Ostwald, “Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D,” <i>Applied Sciences</i>, vol. 16, no. 1, Art. no. 384, 2025, doi: <a href=\"https://doi.org/10.3390/app16010384\">10.3390/app16010384</a>.","ama":"Krome S, Duffe T, Kullmer G, Schramm B, Ostwald R. Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D. <i>Applied Sciences</i>. 2025;16(1). doi:<a href=\"https://doi.org/10.3390/app16010384\">10.3390/app16010384</a>","bibtex":"@article{Krome_Duffe_Kullmer_Schramm_Ostwald_2025, title={Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D}, volume={16}, DOI={<a href=\"https://doi.org/10.3390/app16010384\">10.3390/app16010384</a>}, number={1384}, journal={Applied Sciences}, publisher={MDPI AG}, author={Krome, Sven and Duffe, Tobias and Kullmer, Gunter and Schramm, Britta and Ostwald, Richard}, year={2025} }","mla":"Krome, Sven, et al. “Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D.” <i>Applied Sciences</i>, vol. 16, no. 1, 384, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/app16010384\">10.3390/app16010384</a>."},"quality_controlled":"1","project":[{"_id":"132","name":"TRR 285 - Project Area B"},{"_id":"143","name":"TRR 285 - Subproject B04"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"status":"public","publisher":"MDPI AG","_id":"63662","user_id":"7850","volume":16},{"status":"public","title":"Numerical investigation of pitting corrosion in clinched joints","year":"2025","author":[{"full_name":"Harzheim, Sven","first_name":"Sven","last_name":"Harzheim"},{"first_name":"Chin","last_name":"Chen","full_name":"Chen, Chin"},{"first_name":"Katharina","last_name":"Hollmer","full_name":"Hollmer, Katharina"},{"first_name":"Martin","last_name":"Hofmann","full_name":"Hofmann, Martin"},{"last_name":"Zimmermann","first_name":"Martina","full_name":"Zimmermann, Martina"},{"last_name":"Wallmersperger","first_name":"Thomas","full_name":"Wallmersperger, Thomas"}],"publication_identifier":{"issn":["0001-5970","1619-6937"]},"date_updated":"2026-05-12T12:56:55Z","publication_status":"published","publisher":"Springer Science and Business Media LLC","_id":"61822","language":[{"iso":"eng"}],"doi":"10.1007/s00707-025-04248-2","user_id":"7850","publication":"Acta Mechanica","citation":{"short":"S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, T. Wallmersperger, Acta Mechanica (2025).","ama":"Harzheim S, Chen C, Hollmer K, Hofmann M, Zimmermann M, Wallmersperger T. Numerical investigation of pitting corrosion in clinched joints. <i>Acta Mechanica</i>. Published online 2025. doi:<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>","chicago":"Harzheim, Sven, Chin Chen, Katharina Hollmer, Martin Hofmann, Martina Zimmermann, and Thomas Wallmersperger. “Numerical Investigation of Pitting Corrosion in Clinched Joints.” <i>Acta Mechanica</i>, 2025. <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">https://doi.org/10.1007/s00707-025-04248-2</a>.","bibtex":"@article{Harzheim_Chen_Hollmer_Hofmann_Zimmermann_Wallmersperger_2025, title={Numerical investigation of pitting corrosion in clinched joints}, DOI={<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>}, journal={Acta Mechanica}, publisher={Springer Science and Business Media LLC}, author={Harzheim, Sven and Chen, Chin and Hollmer, Katharina and Hofmann, Martin and Zimmermann, Martina and Wallmersperger, Thomas}, year={2025} }","apa":"Harzheim, S., Chen, C., Hollmer, K., Hofmann, M., Zimmermann, M., &#38; Wallmersperger, T. (2025). Numerical investigation of pitting corrosion in clinched joints. <i>Acta Mechanica</i>. <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">https://doi.org/10.1007/s00707-025-04248-2</a>","mla":"Harzheim, Sven, et al. “Numerical Investigation of Pitting Corrosion in Clinched Joints.” <i>Acta Mechanica</i>, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>.","ieee":"S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, and T. Wallmersperger, “Numerical investigation of pitting corrosion in clinched joints,” <i>Acta Mechanica</i>, 2025, doi: <a href=\"https://doi.org/10.1007/s00707-025-04248-2\">10.1007/s00707-025-04248-2</a>."},"abstract":[{"lang":"eng","text":"The effect of corrosion on mechanically joined components is not well understood. While recent research shows that a brief exposure of clinched specimens to a salt spray environment improves the specimens’ fatigue life, other research shows a decrease in load bearing capabilities with increasing corrosion times. These studies primarily focus on galvanic corrosion. It is not entirely clear how other corrosion phenomena, such as pitting corrosion, affect the fatigue life of clinched joints. In this work, a numerical model is used, which is able to simulate corrosion pit growth in EN AW-6014. The experimental polarization data of EN AW-6014 are used directly in the calculation of the interface kinetics parameter of the model."}],"project":[{"_id":"141","name":"TRR 285 - Subproject B02"},{"_id":"142","name":"TRR 285 - Subproject B03"},{"name":"TRR 285 - Project Area B","_id":"132"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"date_created":"2025-10-13T15:17:35Z","type":"journal_article"},{"volume":408,"user_id":"7850","publisher":"EDP Sciences","_id":"60285","conference":{"start_date":"2025-06-01","name":"44th Conference of the International Deep Drawing Research Group (IDDRG 2025) ","location":"Lisbon","end_date":"2025-06-05"},"status":"public","project":[{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A04: TRR 285 - Subproject A04","_id":"138"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"},{"_id":"130","name":"TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten"}],"quality_controlled":"1","citation":{"chicago":"Lüder, Stephan, Eugen Wolf, Hans Christian Schmale, and Alexander Brosius. “Investigation of the Impact of a Rotationally Superimposed Punch Stroke on the Binding Mechanisms of a Clinched Joint.” In <i>MATEC Web of Conferences</i>, Vol. 408. EDP Sciences, 2025. <a href=\"https://doi.org/10.1051/matecconf/202540801086\">https://doi.org/10.1051/matecconf/202540801086</a>.","short":"S. Lüder, E. Wolf, H.C. Schmale, A. Brosius, in: MATEC Web of Conferences, EDP Sciences, 2025.","apa":"Lüder, S., Wolf, E., Schmale, H. C., &#38; Brosius, A. (2025). Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint. <i>MATEC Web of Conferences</i>, <i>408</i>, Article 01086. <a href=\"https://doi.org/10.1051/matecconf/202540801086\">https://doi.org/10.1051/matecconf/202540801086</a>","ieee":"S. Lüder, E. Wolf, H. C. Schmale, and A. Brosius, “Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint,” in <i>MATEC Web of Conferences</i>, Lisbon, 2025, vol. 408, doi: <a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>.","ama":"Lüder S, Wolf E, Schmale HC, Brosius A. Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint. In: <i>MATEC Web of Conferences</i>. Vol 408. EDP Sciences; 2025. doi:<a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>","bibtex":"@inproceedings{Lüder_Wolf_Schmale_Brosius_2025, title={Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint}, volume={408}, DOI={<a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>}, number={01086}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences}, author={Lüder, Stephan and Wolf, Eugen and Schmale, Hans Christian and Brosius, Alexander}, year={2025} }","mla":"Lüder, Stephan, et al. “Investigation of the Impact of a Rotationally Superimposed Punch Stroke on the Binding Mechanisms of a Clinched Joint.” <i>MATEC Web of Conferences</i>, vol. 408, 01086, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/matecconf/202540801086\">10.1051/matecconf/202540801086</a>."},"doi":"10.1051/matecconf/202540801086","language":[{"iso":"eng"}],"article_number":"01086","intvolume":"       408","publication_status":"published","date_updated":"2026-05-12T13:08:56Z","publication_identifier":{"issn":["2261-236X"]},"author":[{"first_name":"Stephan","last_name":"Lüder","full_name":"Lüder, Stephan"},{"full_name":"Wolf, Eugen","last_name":"Wolf","first_name":"Eugen"},{"first_name":"Hans Christian","last_name":"Schmale","full_name":"Schmale, Hans Christian"},{"last_name":"Brosius","first_name":"Alexander","full_name":"Brosius, Alexander"}],"title":"Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint","year":"2025","department":[{"_id":"630"}],"keyword":["Joining","Sheet Metal","Tribology","Clinching"],"type":"conference","date_created":"2025-06-20T06:57:16Z","extern":"1","abstract":[{"text":"This paper examines the impact of a rotationally superimposed punch stroke on the binding mechanisms of clinched joints of aluminum sheets. As part of the development of a method for ensuring the versatility of clinching, an additional rotational movement of the punch was introduced as a control variable to influence friction in the mechanical joining process. The effect of rotational superimposition on the force-displacement curve of the clinching processes was investigated using four test variants with different kinematics. The primary objective was to evaluate the binding mechanisms that maintain the integrity of the clinched joint. To evaluate the force closure of the resulting joint, two testing methods were employed throughout the course of the research, non-destructive resistance measurement using four-wire sensing method and destructive torsion testing. A crucial factor influencing the efficacy of the process is surface cleanliness, as contaminants between joining partners can impede the effectiveness of the clinched joint. Therefore, all specimens were meticulously cleaned prior to experimentation. This method exhibits promising potential in creating clinched joints that align with the demands of flexible manufacturing environments.</jats:p>","lang":"eng"}],"publication":"MATEC Web of Conferences"},{"author":[{"full_name":"Kullmer, Gunter","first_name":"Gunter","last_name":"Kullmer","id":"291"},{"full_name":"Weiß, Deborah","first_name":"Deborah","last_name":"Weiß","id":"45673"},{"first_name":"Britta","last_name":"Schramm","full_name":"Schramm, Britta","id":"4668"}],"publication_identifier":{"issn":["0013-7944"]},"title":"An alternative and robust formulation of the fatigue crack growth rate curve for long cracks","year":"2024","intvolume":"       296","date_updated":"2024-02-22T09:55:31Z","publication_status":"published","language":[{"iso":"eng"}],"article_number":"109826","doi":"10.1016/j.engfracmech.2023.109826","publication":"Engineering Fracture Mechanics","date_created":"2024-02-22T09:35:01Z","department":[{"_id":"143"},{"_id":"630"}],"type":"journal_article","keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"status":"public","_id":"51737","publisher":"Elsevier BV","volume":296,"user_id":"45673","citation":{"apa":"Kullmer, G., Weiß, D., &#38; Schramm, B. (2024). An alternative and robust formulation of the fatigue crack growth rate curve for long cracks. <i>Engineering Fracture Mechanics</i>, <i>296</i>, Article 109826. <a href=\"https://doi.org/10.1016/j.engfracmech.2023.109826\">https://doi.org/10.1016/j.engfracmech.2023.109826</a>","ieee":"G. Kullmer, D. Weiß, and B. Schramm, “An alternative and robust formulation of the fatigue crack growth rate curve for long cracks,” <i>Engineering Fracture Mechanics</i>, vol. 296, Art. no. 109826, 2024, doi: <a href=\"https://doi.org/10.1016/j.engfracmech.2023.109826\">10.1016/j.engfracmech.2023.109826</a>.","chicago":"Kullmer, Gunter, Deborah Weiß, and Britta Schramm. “An Alternative and Robust Formulation of the Fatigue Crack Growth Rate Curve for Long Cracks.” <i>Engineering Fracture Mechanics</i> 296 (2024). <a href=\"https://doi.org/10.1016/j.engfracmech.2023.109826\">https://doi.org/10.1016/j.engfracmech.2023.109826</a>.","short":"G. Kullmer, D. Weiß, B. Schramm, Engineering Fracture Mechanics 296 (2024).","mla":"Kullmer, Gunter, et al. “An Alternative and Robust Formulation of the Fatigue Crack Growth Rate Curve for Long Cracks.” <i>Engineering Fracture Mechanics</i>, vol. 296, 109826, Elsevier BV, 2024, doi:<a href=\"https://doi.org/10.1016/j.engfracmech.2023.109826\">10.1016/j.engfracmech.2023.109826</a>.","ama":"Kullmer G, Weiß D, Schramm B. An alternative and robust formulation of the fatigue crack growth rate curve for long cracks. <i>Engineering Fracture Mechanics</i>. 2024;296. doi:<a href=\"https://doi.org/10.1016/j.engfracmech.2023.109826\">10.1016/j.engfracmech.2023.109826</a>","bibtex":"@article{Kullmer_Weiß_Schramm_2024, title={An alternative and robust formulation of the fatigue crack growth rate curve for long cracks}, volume={296}, DOI={<a href=\"https://doi.org/10.1016/j.engfracmech.2023.109826\">10.1016/j.engfracmech.2023.109826</a>}, number={109826}, journal={Engineering Fracture Mechanics}, publisher={Elsevier BV}, author={Kullmer, Gunter and Weiß, Deborah and Schramm, Britta}, year={2024} }"},"project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"name":"TRR 285 - B: TRR 285 - Project Area B","_id":"132"},{"_id":"143","name":"TRR 285 – B04: TRR 285 - Subproject B04"}]},{"project":[{"_id":"130","grant_number":"418701707","name":"TRR 285: TRR 285"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B04: TRR 285 - Subproject B04","_id":"143"}],"citation":{"apa":"Kullmer, G., Weiß, D., &#38; Schramm, B. (2024). <i>Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven</i>. 56. Tagung des DVM-Arbeitskreises Bruchmechanik und Bauteilsicherheit , Kassel. <a href=\"https://doi.org/10.48447/BR-2024-369\">https://doi.org/10.48447/BR-2024-369</a>","ieee":"G. Kullmer, D. Weiß, and B. Schramm, “Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven,” presented at the 56. Tagung des DVM-Arbeitskreises Bruchmechanik und Bauteilsicherheit , Kassel, 2024, doi: <a href=\"https://doi.org/10.48447/BR-2024-369\">10.48447/BR-2024-369</a>.","short":"G. Kullmer, D. Weiß, B. Schramm, in: Deutscher Verband für Materialforschung und –prüfung e.V., 2024.","chicago":"Kullmer, Gunter, Deborah Weiß, and Britta Schramm. “Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven.” Deutscher Verband für Materialforschung und –prüfung e.V., 2024. <a href=\"https://doi.org/10.48447/BR-2024-369\">https://doi.org/10.48447/BR-2024-369</a>.","mla":"Kullmer, Gunter, et al. <i>Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven</i>. Deutscher Verband für Materialforschung und –prüfung e.V., 2024, doi:<a href=\"https://doi.org/10.48447/BR-2024-369\">10.48447/BR-2024-369</a>.","ama":"Kullmer G, Weiß D, Schramm B. Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven. In: Deutscher Verband für Materialforschung und –prüfung e.V.; 2024. doi:<a href=\"https://doi.org/10.48447/BR-2024-369\">10.48447/BR-2024-369</a>","bibtex":"@inproceedings{Kullmer_Weiß_Schramm_2024, title={Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven}, DOI={<a href=\"https://doi.org/10.48447/BR-2024-369\">10.48447/BR-2024-369</a>}, publisher={Deutscher Verband für Materialforschung und –prüfung e.V.}, author={Kullmer, Gunter and Weiß, Deborah and Schramm, Britta}, year={2024} }"},"department":[{"_id":"143"}],"type":"conference","date_created":"2024-04-10T07:58:29Z","date_updated":"2024-04-10T08:30:45Z","conference":{"name":"56. Tagung des DVM-Arbeitskreises Bruchmechanik und Bauteilsicherheit ","start_date":"2024-02-20","location":"Kassel","end_date":"2024-02-21"},"author":[{"last_name":"Kullmer","first_name":"Gunter","full_name":"Kullmer, Gunter","id":"291"},{"id":"45673","first_name":"Deborah","last_name":"Weiß","full_name":"Weiß, Deborah"},{"id":"4668","last_name":"Schramm","first_name":"Britta","full_name":"Schramm, Britta"}],"title":"Weiterentwicklung des Exponentialansatzes zur Beschreibung von Rissfortschrittskurven","status":"public","year":"2024","doi":"10.48447/BR-2024-369","user_id":"45673","_id":"53394","publisher":"Deutscher Verband für Materialforschung und –prüfung e.V.","language":[{"iso":"ger"}]}]