[{"department":[{"_id":"157"},{"_id":"630"}],"user_id":"34782","_id":"30962","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"}],"language":[{"iso":"eng"}],"keyword":["Mechanical Engineering","General Materials Science"],"article_number":"146442072210934","publication":"Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications","type":"journal_article","status":"public","abstract":[{"text":"<jats:p> Clinching as a mechanical joining process has become established in many areas of car body. In order to predict relevant properties of clinched joints and to ensure the reliability of the process, it is numerically simulated during the product development process. The prediction accuracy of the simulated process depends on the implemented friction model. Therefore, a new method for determining friction coefficients in sheet metal materials was developed and tested. The aim of this study is the numerical investigation of this experimental method by means of FE simulation. The experimental setup is modelled in a 3D numerical simulation taking into account the process parameters varying in the experiment, such as geometric properties, contact pressure and contact velocity. Furthermore, the contact description of the model is calibrated via the experimentally determined friction coefficients according to clinch-relevant parameter space. It is shown that the assumptions made in the determination of the experimental data in preliminary work are valid. In addition, it is investigated to what extent the standard Coulomb friction model in the FEM can reproduce the results of the experimental method. </jats:p>","lang":"eng"}],"date_created":"2022-04-27T08:58:11Z","author":[{"full_name":"Bielak, Christian Roman","id":"34782","last_name":"Bielak","first_name":"Christian Roman"},{"first_name":"Max","id":"45779","full_name":"Böhnke, Max","last_name":"Böhnke"},{"first_name":"Mathias","full_name":"Bobbert, Mathias","id":"7850","last_name":"Bobbert"},{"orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"}],"publisher":"SAGE Publications","date_updated":"2023-04-28T11:31:35Z","doi":"10.1177/14644207221093468","title":"Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process","publication_identifier":{"issn":["1464-4207","2041-3076"]},"quality_controlled":"1","publication_status":"published","citation":{"ieee":"C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process,” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, Art. no. 146442072210934, 2022, doi: <a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>.","chicago":"Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Numerical Investigation of a Friction  Test to Determine the Friction  Coefficients for the Clinching Process.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, 2022. <a href=\"https://doi.org/10.1177/14644207221093468\">https://doi.org/10.1177/14644207221093468</a>.","ama":"Bielak CR, Böhnke M, Bobbert M, Meschut G. Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>","apa":"Bielak, C. R., Böhnke, M., Bobbert, M., &#38; Meschut, G. (2022). Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process. <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, Article 146442072210934. <a href=\"https://doi.org/10.1177/14644207221093468\">https://doi.org/10.1177/14644207221093468</a>","bibtex":"@article{Bielak_Böhnke_Bobbert_Meschut_2022, title={Numerical investigation of a friction  test to determine the friction  coefficients for the clinching process}, DOI={<a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>}, number={146442072210934}, journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}, year={2022} }","mla":"Bielak, Christian Roman, et al. “Numerical Investigation of a Friction  Test to Determine the Friction  Coefficients for the Clinching Process.” <i>Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</i>, 146442072210934, SAGE Publications, 2022, doi:<a href=\"https://doi.org/10.1177/14644207221093468\">10.1177/14644207221093468</a>.","short":"C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022)."},"year":"2022"},{"title":"Numerical and experimental identification of fatigue crack initiation sites in clinched joints","date_created":"2022-04-27T09:02:05Z","publisher":"Springer Science and Business Media LLC","year":"2022","issue":"2-3","quality_controlled":"1","language":[{"iso":"eng"}],"keyword":["Industrial and Manufacturing Engineering","Mechanical Engineering"],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>In this paper, a study based on experimental and numerical simulations is performed to analyze fatigue cracks in clinched joints. An experimental investigation is conducted to determine the failure modes of clinched joints under cyclic loading at different load amplitudes with single-lap shear tests. In addition, numerical FEM simulations of clinching process and subsequent shear loading are performed to support the experimental investigations by analyzing the state of stresses at the location of failure. An attempt is made to explain the location of crack initiation in the experiments using evaluation variables such as contact shear stress and maximum principal stress.</jats:p>"}],"publication":"Production Engineering","doi":"10.1007/s11740-022-01124-z","author":[{"full_name":"Ewenz, Lars","last_name":"Ewenz","first_name":"Lars"},{"full_name":"Bielak, Christian Roman","id":"34782","last_name":"Bielak","first_name":"Christian Roman"},{"last_name":"Otroshi","orcid":"0000-0002-8652-9209","id":"71269","full_name":"Otroshi, Mortaza","first_name":"Mortaza"},{"first_name":"Mathias","last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias"},{"first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056","full_name":"Meschut, Gerson"},{"full_name":"Zimmermann, Martina","last_name":"Zimmermann","first_name":"Martina"}],"volume":16,"date_updated":"2023-04-28T11:31:17Z","citation":{"mla":"Ewenz, Lars, et al. “Numerical and Experimental Identification of Fatigue Crack Initiation Sites in Clinched Joints.” <i>Production Engineering</i>, vol. 16, no. 2–3, Springer Science and Business Media LLC, 2022, pp. 305–13, doi:<a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>.","short":"L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann, Production Engineering 16 (2022) 305–313.","bibtex":"@article{Ewenz_Bielak_Otroshi_Bobbert_Meschut_Zimmermann_2022, title={Numerical and experimental identification of fatigue crack initiation sites in clinched joints}, volume={16}, DOI={<a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>}, number={2–3}, journal={Production Engineering}, publisher={Springer Science and Business Media LLC}, author={Ewenz, Lars and Bielak, Christian Roman and Otroshi, Mortaza and Bobbert, Mathias and Meschut, Gerson and Zimmermann, Martina}, year={2022}, pages={305–313} }","apa":"Ewenz, L., Bielak, C. R., Otroshi, M., Bobbert, M., Meschut, G., &#38; Zimmermann, M. (2022). Numerical and experimental identification of fatigue crack initiation sites in clinched joints. <i>Production Engineering</i>, <i>16</i>(2–3), 305–313. <a href=\"https://doi.org/10.1007/s11740-022-01124-z\">https://doi.org/10.1007/s11740-022-01124-z</a>","chicago":"Ewenz, Lars, Christian Roman Bielak, Mortaza Otroshi, Mathias Bobbert, Gerson Meschut, and Martina Zimmermann. “Numerical and Experimental Identification of Fatigue Crack Initiation Sites in Clinched Joints.” <i>Production Engineering</i> 16, no. 2–3 (2022): 305–13. <a href=\"https://doi.org/10.1007/s11740-022-01124-z\">https://doi.org/10.1007/s11740-022-01124-z</a>.","ieee":"L. Ewenz, C. R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, and M. Zimmermann, “Numerical and experimental identification of fatigue crack initiation sites in clinched joints,” <i>Production Engineering</i>, vol. 16, no. 2–3, pp. 305–313, 2022, doi: <a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>.","ama":"Ewenz L, Bielak CR, Otroshi M, Bobbert M, Meschut G, Zimmermann M. Numerical and experimental identification of fatigue crack initiation sites in clinched joints. <i>Production Engineering</i>. 2022;16(2-3):305-313. doi:<a href=\"https://doi.org/10.1007/s11740-022-01124-z\">10.1007/s11740-022-01124-z</a>"},"page":"305-313","intvolume":"        16","publication_status":"published","publication_identifier":{"issn":["0944-6524","1863-7353"]},"user_id":"34782","department":[{"_id":"157"}],"project":[{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"_id":"141","name":"TRR 285 – B02: TRR 285 - Subproject B02"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"}],"_id":"30963","status":"public","type":"journal_article"},{"publication_identifier":{"issn":["2666-3309"]},"publication_status":"published","intvolume":"         6","citation":{"apa":"Schramm, B., Martin, S., Steinfelder, C., Bielak, C. R., Brosius, A., Meschut, G., Tröster, T., Wallmersperger, T., &#38; Mergheim, J. (2022). A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase. <i>Journal of Advanced Joining Processes</i>, <i>6</i>, Article 100133. <a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">https://doi.org/10.1016/j.jajp.2022.100133</a>","bibtex":"@article{Schramm_Martin_Steinfelder_Bielak_Brosius_Meschut_Tröster_Wallmersperger_Mergheim_2022, title={A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase}, volume={6}, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>}, number={100133}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Schramm, Britta and Martin, Sven and Steinfelder, Christian and Bielak, Christian Roman and Brosius, Alexander and Meschut, Gerson and Tröster, Thomas and Wallmersperger, Thomas and Mergheim, Julia}, year={2022} }","short":"B. Schramm, S. Martin, C. Steinfelder, C.R. Bielak, A. Brosius, G. Meschut, T. Tröster, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes 6 (2022).","mla":"Schramm, Britta, et al. “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase.” <i>Journal of Advanced Joining Processes</i>, vol. 6, 100133, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>.","ama":"Schramm B, Martin S, Steinfelder C, et al. A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase. <i>Journal of Advanced Joining Processes</i>. 2022;6. doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>","ieee":"B. Schramm <i>et al.</i>, “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase,” <i>Journal of Advanced Joining Processes</i>, vol. 6, Art. no. 100133, 2022, doi: <a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">10.1016/j.jajp.2022.100133</a>.","chicago":"Schramm, Britta, Sven Martin, Christian Steinfelder, Christian Roman Bielak, Alexander Brosius, Gerson Meschut, Thomas Tröster, Thomas Wallmersperger, and Julia Mergheim. “A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase.” <i>Journal of Advanced Joining Processes</i> 6 (2022). <a href=\"https://doi.org/10.1016/j.jajp.2022.100133\">https://doi.org/10.1016/j.jajp.2022.100133</a>."},"date_updated":"2023-04-28T11:30:38Z","volume":6,"author":[{"last_name":"Schramm","full_name":"Schramm, Britta","id":"4668","first_name":"Britta"},{"full_name":"Martin, Sven","id":"38177","last_name":"Martin","first_name":"Sven"},{"first_name":"Christian","last_name":"Steinfelder","full_name":"Steinfelder, Christian"},{"full_name":"Bielak, Christian Roman","id":"34782","last_name":"Bielak","first_name":"Christian Roman"},{"first_name":"Alexander","last_name":"Brosius","full_name":"Brosius, Alexander"},{"full_name":"Meschut, Gerson","id":"32056","orcid":"0000-0002-2763-1246","last_name":"Meschut","first_name":"Gerson"},{"first_name":"Thomas","id":"553","full_name":"Tröster, Thomas","last_name":"Tröster"},{"full_name":"Wallmersperger, Thomas","last_name":"Wallmersperger","first_name":"Thomas"},{"last_name":"Mergheim","full_name":"Mergheim, Julia","first_name":"Julia"}],"doi":"10.1016/j.jajp.2022.100133","type":"journal_article","status":"public","_id":"34069","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"_id":"143","name":"TRR 285 – B04: TRR 285 - Subproject B04"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"},{"_id":"142","name":"TRR 285 – B03: TRR 285 - Subproject B03"},{"name":"TRR 285 – A05: TRR 285 - Subproject A05","_id":"139"}],"department":[{"_id":"143"},{"_id":"157"}],"user_id":"34782","article_number":"100133","quality_controlled":"1","year":"2022","publisher":"Elsevier BV","date_created":"2022-11-14T08:53:49Z","title":"A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase","publication":"Journal of Advanced Joining Processes","keyword":["Mechanical Engineering","Mechanics of Materials","Engineering (miscellaneous)","Chemical Engineering (miscellaneous)"],"language":[{"iso":"eng"}]},{"publication":"Journal of Advanced Joining Processes","type":"journal_article","status":"public","_id":"34068","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"_id":"143","name":"TRR 285 – B04: TRR 285 - Subproject B04"},{"name":"TRR 285 – A05: TRR 285 - Subproject A05","_id":"139"},{"name":"TRR 285 – A03: TRR 285 - Subproject A03","_id":"137"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"name":"TRR 285 – B03: TRR 285 - Subproject B03","_id":"142"}],"department":[{"_id":"143"},{"_id":"157"}],"user_id":"34782","keyword":["Mechanical Engineering","Mechanics of Materials","Engineering (miscellaneous)","Chemical Engineering (miscellaneous)"],"article_number":"100134","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2666-3309"]},"quality_controlled":"1","publication_status":"published","year":"2022","citation":{"apa":"Schramm, B., Friedlein, J., Gröger, B., Bielak, C. R., Bobbert, M., Gude, M., Meschut, G., Wallmersperger, T., &#38; Mergheim, J. (2022). A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process. <i>Journal of Advanced Joining Processes</i>, Article 100134. <a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">https://doi.org/10.1016/j.jajp.2022.100134</a>","bibtex":"@article{Schramm_Friedlein_Gröger_Bielak_Bobbert_Gude_Meschut_Wallmersperger_Mergheim_2022, title={A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process}, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>}, number={100134}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier BV}, author={Schramm, Britta and Friedlein, Johannes and Gröger, Benjamin and Bielak, Christian Roman and Bobbert, Mathias and Gude, Maik and Meschut, Gerson and Wallmersperger, Thomas and Mergheim, Julia}, year={2022} }","mla":"Schramm, Britta, et al. “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process.” <i>Journal of Advanced Joining Processes</i>, 100134, Elsevier BV, 2022, doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>.","short":"B. Schramm, J. Friedlein, B. Gröger, C.R. Bielak, M. Bobbert, M. Gude, G. Meschut, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes (2022).","chicago":"Schramm, Britta, Johannes Friedlein, Benjamin Gröger, Christian Roman Bielak, Mathias Bobbert, Maik Gude, Gerson Meschut, Thomas Wallmersperger, and Julia Mergheim. “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process.” <i>Journal of Advanced Joining Processes</i>, 2022. <a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">https://doi.org/10.1016/j.jajp.2022.100134</a>.","ieee":"B. Schramm <i>et al.</i>, “A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process,” <i>Journal of Advanced Joining Processes</i>, Art. no. 100134, 2022, doi: <a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>.","ama":"Schramm B, Friedlein J, Gröger B, et al. A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process. <i>Journal of Advanced Joining Processes</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1016/j.jajp.2022.100134\">10.1016/j.jajp.2022.100134</a>"},"date_updated":"2023-04-28T11:31:03Z","publisher":"Elsevier BV","date_created":"2022-11-14T08:53:07Z","author":[{"id":"4668","full_name":"Schramm, Britta","last_name":"Schramm","first_name":"Britta"},{"full_name":"Friedlein, Johannes","last_name":"Friedlein","first_name":"Johannes"},{"full_name":"Gröger, Benjamin","last_name":"Gröger","first_name":"Benjamin"},{"first_name":"Christian Roman","id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak"},{"full_name":"Bobbert, Mathias","id":"7850","last_name":"Bobbert","first_name":"Mathias"},{"first_name":"Maik","full_name":"Gude, Maik","last_name":"Gude"},{"first_name":"Gerson","full_name":"Meschut, Gerson","id":"32056","last_name":"Meschut","orcid":"0000-0002-2763-1246"},{"first_name":"Thomas","full_name":"Wallmersperger, Thomas","last_name":"Wallmersperger"},{"first_name":"Julia","last_name":"Mergheim","full_name":"Mergheim, Julia"}],"title":"A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process","doi":"10.1016/j.jajp.2022.100134"},{"publication_identifier":{"issn":["0944-6524","1863-7353"]},"publication_status":"published","citation":{"short":"S. Martin, C.R. Bielak, M. Bobbert, T. Tröster, G. Meschut, Production Engineering (2022).","bibtex":"@article{Martin_Bielak_Bobbert_Tröster_Meschut_2022, title={Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area}, DOI={<a href=\"https://doi.org/10.1007/s11740-021-01103-w\">10.1007/s11740-021-01103-w</a>}, journal={Production Engineering}, publisher={Springer Science and Business Media LLC}, author={Martin, Sven and Bielak, Christian Roman and Bobbert, Mathias and Tröster, Thomas and Meschut, Gerson}, year={2022} }","mla":"Martin, Sven, et al. “Numerical Investigation of the Clinched Joint Loadings Considering the Initial Pre-Strain in the Joining Area.” <i>Production Engineering</i>, Springer Science and Business Media LLC, 2022, doi:<a href=\"https://doi.org/10.1007/s11740-021-01103-w\">10.1007/s11740-021-01103-w</a>.","apa":"Martin, S., Bielak, C. R., Bobbert, M., Tröster, T., &#38; Meschut, G. (2022). Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area. <i>Production Engineering</i>. <a href=\"https://doi.org/10.1007/s11740-021-01103-w\">https://doi.org/10.1007/s11740-021-01103-w</a>","ieee":"S. Martin, C. R. Bielak, M. Bobbert, T. Tröster, and G. Meschut, “Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area,” <i>Production Engineering</i>, 2022, doi: <a href=\"https://doi.org/10.1007/s11740-021-01103-w\">10.1007/s11740-021-01103-w</a>.","chicago":"Martin, Sven, Christian Roman Bielak, Mathias Bobbert, Thomas Tröster, and Gerson Meschut. “Numerical Investigation of the Clinched Joint Loadings Considering the Initial Pre-Strain in the Joining Area.” <i>Production Engineering</i>, 2022. <a href=\"https://doi.org/10.1007/s11740-021-01103-w\">https://doi.org/10.1007/s11740-021-01103-w</a>.","ama":"Martin S, Bielak CR, Bobbert M, Tröster T, Meschut G. Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area. <i>Production Engineering</i>. Published online 2022. doi:<a href=\"https://doi.org/10.1007/s11740-021-01103-w\">10.1007/s11740-021-01103-w</a>"},"author":[{"first_name":"Sven","last_name":"Martin","full_name":"Martin, Sven","id":"38177"},{"first_name":"Christian Roman","id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak"},{"first_name":"Mathias","last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias"},{"first_name":"Thomas","id":"553","full_name":"Tröster, Thomas","last_name":"Tröster"},{"orcid":"0000-0002-2763-1246","last_name":"Meschut","full_name":"Meschut, Gerson","id":"32056","first_name":"Gerson"}],"date_updated":"2023-04-28T11:57:22Z","oa":"1","doi":"10.1007/s11740-021-01103-w","main_file_link":[{"url":"https://link.springer.com/article/10.1007/s11740-021-01103-w","open_access":"1"}],"type":"journal_article","status":"public","department":[{"_id":"321"},{"_id":"149"},{"_id":"630"},{"_id":"157"}],"user_id":"38177","_id":"29951","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"_id":"132","name":"TRR 285 - B: TRR 285 - Project Area B"},{"name":"TRR 285 – B01: TRR 285 - Subproject B01","_id":"140"}],"quality_controlled":"1","year":"2022","date_created":"2022-02-22T12:52:09Z","publisher":"Springer Science and Business Media LLC","title":"Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area","publication":"Production Engineering","abstract":[{"text":"The components of a body in white consist of many individual thin-walled sheet metal parts, which usually are manufactured in deep-drawing processes. In general, the conditions in a deep-drawing process change due to changing tribology conditions, varying degrees of spring back, or scattering material properties in the sheet blanks, which affects the resulting pre-strain. Mechanical joining processes, especially clinching, are influenced by these process-related pre-strains. The final geometric shape of a clinched joint is affected to a significant level by the prior material deformation when joining with constant process parameters. That leads to a change in the stiffness and force transmission in the clinched joint due to the different geometric dimensions, such as interlock, neck thickness and bottom thickness, which directly affect the load bearing capacity. Here, the influence of the pre-straining in the deep drawing process on the force distribution in clinch points in an automotive assembly is investigated by finite-element models numerically. In further studies, the results are implemented in an optimization tool for designing clinched components. The methodology starts with a pre-straining of metal sheets. This step is followed by 2D rotationally symmetric forming simulations of the joining process. The resulting mesh of each forming simulation is rotated and 3D models are obtained. The clinched joint solid model with pre-strains is used further to determine the joint stiffnesses. With the simulation of the same test set-up with an equivalent point-connector model, the equivalent stiffness for each pre-strain combination is determined. Simulations are performed on a clinched component to assess the influence of pre-strain and sheet thinning on the clinched joint loadings by using the equivalent stiffnesses. The investigations clearly show that for the selected component, the loadings at the clinch points are dependent on the sheet thinning and the stiffnesses due to pre-strain. The magnitude of the influence varies depending on the quantity considered. For example, the shear force is more sensitive to the joint stiffness than to the sheet thinning.</jats:p>","lang":"eng"}],"language":[{"iso":"eng"}],"keyword":["Industrial and Manufacturing Engineering","Mechanical Engineering"]},{"publication_status":"submitted","citation":{"chicago":"Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Further Development of a Numerical Method for Analyzing the Load Capacity of Clinched Joints in Versatile Process Chains.” ESAFORM 2021, n.d. <a href=\"https://doi.org/10.25518/esaform21.4298\">https://doi.org/10.25518/esaform21.4298</a>.","ieee":"C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains,” presented at the ESAFORM 2021, Lüttich, doi: <a href=\"https://doi.org/10.25518/esaform21.4298\">10.25518/esaform21.4298</a>.","apa":"Bielak, C. R., Böhnke, M., Bobbert, M., &#38; Meschut, G. (n.d.). <i>Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains</i>. ESAFORM 2021, Lüttich. <a href=\"https://doi.org/10.25518/esaform21.4298\">https://doi.org/10.25518/esaform21.4298</a>","ama":"Bielak CR, Böhnke M, Bobbert M, Meschut G. Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains. doi:<a href=\"https://doi.org/10.25518/esaform21.4298\">10.25518/esaform21.4298</a>","mla":"Bielak, Christian Roman, et al. <i>Further Development of a Numerical Method for Analyzing the Load Capacity of Clinched Joints in Versatile Process Chains</i>. doi:<a href=\"https://doi.org/10.25518/esaform21.4298\">10.25518/esaform21.4298</a>.","bibtex":"@inproceedings{Bielak_Böhnke_Bobbert_Meschut, place={ESAFORM 2021}, title={Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains}, DOI={<a href=\"https://doi.org/10.25518/esaform21.4298\">10.25518/esaform21.4298</a>}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson} }","short":"C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: ESAFORM 2021, n.d."},"place":"ESAFORM 2021","year":"2021","author":[{"first_name":"Christian Roman","last_name":"Bielak","full_name":"Bielak, Christian Roman","id":"34782"},{"first_name":"Max","id":"45779","full_name":"Böhnke, Max","last_name":"Böhnke"},{"last_name":"Bobbert","id":"7850","full_name":"Bobbert, Mathias","first_name":"Mathias"},{"first_name":"Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","full_name":"Meschut, Gerson","id":"32056"}],"date_created":"2020-12-21T08:15:27Z","date_updated":"2022-03-29T12:55:57Z","oa":"1","main_file_link":[{"open_access":"1","url":"https://popups.uliege.be/esaform21/index.php?id=3418"}],"conference":{"name":"ESAFORM 2021","start_date":"2021 04 14","end_date":"2021 04 16","location":"Lüttich"},"doi":"10.25518/esaform21.4298","title":"Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains","type":"conference","status":"public","user_id":"34782","department":[{"_id":"157"}],"project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"}],"_id":"20807","language":[{"iso":"eng"}]},{"status":"public","publication":"Key Engineering Materials","type":"journal_article","language":[{"iso":"eng"}],"_id":"21810","department":[{"_id":"157"}],"user_id":"71269","year":"2021","page":"35-40","intvolume":"       883","citation":{"chicago":"Otroshi, Mortaza, Gerson Meschut, Christian Roman Bielak, Lukas Masendorf, and Alfons Esderts. “Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components.” <i>Key Engineering Materials</i> 883 (2021): 35–40. <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.35\">https://doi.org/10.4028/www.scientific.net/KEM.883.35</a>.","ieee":"M. Otroshi, G. Meschut, C. R. Bielak, L. Masendorf, and A. Esderts, “Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components,” <i>Key Engineering Materials</i>, vol. 883, pp. 35–40, 2021, doi: <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.35\">https://doi.org/10.4028/www.scientific.net/KEM.883.35</a>.","ama":"Otroshi M, Meschut G, Bielak CR, Masendorf L, Esderts A. Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components. <i>Key Engineering Materials</i>. 2021;883:35-40. doi:<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.35\">https://doi.org/10.4028/www.scientific.net/KEM.883.35</a>","bibtex":"@article{Otroshi_Meschut_Bielak_Masendorf_Esderts_2021, title={Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components}, volume={883}, DOI={<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.35\">https://doi.org/10.4028/www.scientific.net/KEM.883.35</a>}, journal={Key Engineering Materials}, publisher={Trans Tech Publications Ltd}, author={Otroshi, Mortaza and Meschut, Gerson and Bielak, Christian Roman and Masendorf, Lukas and Esderts, Alfons}, year={2021}, pages={35–40} }","mla":"Otroshi, Mortaza, et al. “Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components.” <i>Key Engineering Materials</i>, vol. 883, Trans Tech Publications Ltd, 2021, pp. 35–40, doi:<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.35\">https://doi.org/10.4028/www.scientific.net/KEM.883.35</a>.","short":"M. Otroshi, G. Meschut, C.R. Bielak, L. Masendorf, A. Esderts, Key Engineering Materials 883 (2021) 35–40.","apa":"Otroshi, M., Meschut, G., Bielak, C. R., Masendorf, L., &#38; Esderts, A. (2021). Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components. <i>Key Engineering Materials</i>, <i>883</i>, 35–40. <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.35\">https://doi.org/10.4028/www.scientific.net/KEM.883.35</a>"},"quality_controlled":"1","publication_identifier":{"issn":["1662-9795"]},"publication_status":"published","title":"Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components","doi":"https://doi.org/10.4028/www.scientific.net/KEM.883.35","date_updated":"2022-04-25T07:49:04Z","publisher":"Trans Tech Publications Ltd","volume":883,"date_created":"2021-04-27T08:33:03Z","author":[{"last_name":"Otroshi","orcid":"0000-0002-8652-9209","id":"71269","full_name":"Otroshi, Mortaza","first_name":"Mortaza"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"},{"first_name":"Christian Roman","id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak"},{"last_name":"Masendorf","full_name":"Masendorf, Lukas","first_name":"Lukas"},{"full_name":"Esderts, Alfons","last_name":"Esderts","first_name":"Alfons"}]},{"_id":"21811","department":[{"_id":"157"}],"user_id":"45779","series_title":"Key Engineering Materials","type":"conference","status":"public","date_updated":"2024-03-11T08:15:08Z","volume":883,"author":[{"first_name":"Moritz Sebastian","last_name":"Rossel","full_name":"Rossel, Moritz Sebastian","id":"44503"},{"first_name":"Max","id":"45779","full_name":"Böhnke, Max","last_name":"Böhnke"},{"first_name":"Christian Roman","id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak"},{"first_name":"Mathias","full_name":"Bobbert, Mathias","id":"7850","last_name":"Bobbert"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"doi":"10.4028/www.scientific.net/KEM.883.81","publication_status":"published","intvolume":"       883","page":"81-88","citation":{"ama":"Rossel MS, Böhnke M, Bielak CR, Bobbert M, Meschut G. Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes. In: <i>Sheet Metal 2021</i>. Vol 883. Key Engineering Materials. Trans Tech Publications Ltd; 2021:81-88. doi:<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.81\">10.4028/www.scientific.net/KEM.883.81</a>","chicago":"Rossel, Moritz Sebastian, Max Böhnke, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes.” In <i>Sheet Metal 2021</i>, 883:81–88. Key Engineering Materials. Trans Tech Publications Ltd, 2021. <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.81\">https://doi.org/10.4028/www.scientific.net/KEM.883.81</a>.","ieee":"M. S. Rossel, M. Böhnke, C. R. Bielak, M. Bobbert, and G. Meschut, “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes,” in <i>Sheet Metal 2021</i>, 2021, vol. 883, pp. 81–88, doi: <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.81\">10.4028/www.scientific.net/KEM.883.81</a>.","bibtex":"@inproceedings{Rossel_Böhnke_Bielak_Bobbert_Meschut_2021, series={Key Engineering Materials}, title={Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes}, volume={883}, DOI={<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.81\">10.4028/www.scientific.net/KEM.883.81</a>}, booktitle={Sheet Metal 2021}, publisher={Trans Tech Publications Ltd}, author={Rossel, Moritz Sebastian and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2021}, pages={81–88}, collection={Key Engineering Materials} }","short":"M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Sheet Metal 2021, Trans Tech Publications Ltd, 2021, pp. 81–88.","mla":"Rossel, Moritz Sebastian, et al. “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes.” <i>Sheet Metal 2021</i>, vol. 883, Trans Tech Publications Ltd, 2021, pp. 81–88, doi:<a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.81\">10.4028/www.scientific.net/KEM.883.81</a>.","apa":"Rossel, M. S., Böhnke, M., Bielak, C. R., Bobbert, M., &#38; Meschut, G. (2021). Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes. <i>Sheet Metal 2021</i>, <i>883</i>, 81–88. <a href=\"https://doi.org/10.4028/www.scientific.net/KEM.883.81\">https://doi.org/10.4028/www.scientific.net/KEM.883.81</a>"},"keyword":["Tribology","Sheet Metal","Simulation"],"language":[{"iso":"eng"}],"publication":"Sheet Metal 2021","abstract":[{"text":"In order to reduce the fuel consumption and consequently the greenhouse emissions, the automotive industry is implementing lightweight constructions in the body in white production. As a result, the use of aluminum alloys is continuously increasing. Due to poor weldability of aluminum in combination with other materials, mechanical joining technologies like clinching are increasingly used. In order to predict relevant characteristics of clinched joints and to ensure the reliability of the process, it is simulated numerically during product development processes. In this regard the predictive accuracy of the simulated process highly depends on the implemented friction model. In particular, the frictional behavior between the sheet metals affects the geometrical formation of the clinched joint significantly. This paper presents a testing method, which enables to determine the frictional coefficients between sheet metal materials for the simulation of clinching processes. For this purpose, the correlation of interface pressure and the relative velocity between aluminum sheets in clinching processes is investigated using numerical simulation. Furthermore, the developed testing method focuses on the specimen geometry as well as the reproduction of the occurring friction conditions between two sheet metal materials in clinching processes. Based on a methodical approach the test setup is explained and the functionality of the method is proven by experimental tests using sheet metal material EN AW6014. ","lang":"eng"}],"publisher":"Trans Tech Publications Ltd","date_created":"2021-04-28T06:12:54Z","title":"Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes","quality_controlled":"1","year":"2021"},{"publication_identifier":{"issn":["0268-3768","1433-3015"]},"quality_controlled":"1","publication_status":"published","citation":{"ieee":"M. Böhnke, M. S. Rossel, C. R. Bielak, M. Bobbert, and G. Meschut, “Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes,” <i>The International Journal of Advanced Manufacturing Technology</i>, 2021, doi: <a href=\"https://doi.org/10.1007/s00170-021-07986-4\">10.1007/s00170-021-07986-4</a>.","chicago":"Böhnke, Max, Moritz Sebastian Rossel, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Concept Development of a Method for Identifying Friction Coefficients for the Numerical Simulation of Clinching Processes.” <i>The International Journal of Advanced Manufacturing Technology</i>, 2021. <a href=\"https://doi.org/10.1007/s00170-021-07986-4\">https://doi.org/10.1007/s00170-021-07986-4</a>.","ama":"Böhnke M, Rossel MS, Bielak CR, Bobbert M, Meschut G. Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes. <i>The International Journal of Advanced Manufacturing Technology</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1007/s00170-021-07986-4\">10.1007/s00170-021-07986-4</a>","apa":"Böhnke, M., Rossel, M. S., Bielak, C. R., Bobbert, M., &#38; Meschut, G. (2021). Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes. <i>The International Journal of Advanced Manufacturing Technology</i>. <a href=\"https://doi.org/10.1007/s00170-021-07986-4\">https://doi.org/10.1007/s00170-021-07986-4</a>","bibtex":"@article{Böhnke_Rossel_Bielak_Bobbert_Meschut_2021, title={Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes}, DOI={<a href=\"https://doi.org/10.1007/s00170-021-07986-4\">10.1007/s00170-021-07986-4</a>}, journal={The International Journal of Advanced Manufacturing Technology}, author={Böhnke, Max and Rossel, Moritz Sebastian and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2021} }","mla":"Böhnke, Max, et al. “Concept Development of a Method for Identifying Friction Coefficients for the Numerical Simulation of Clinching Processes.” <i>The International Journal of Advanced Manufacturing Technology</i>, 2021, doi:<a href=\"https://doi.org/10.1007/s00170-021-07986-4\">10.1007/s00170-021-07986-4</a>.","short":"M. Böhnke, M.S. Rossel, C.R. Bielak, M. Bobbert, G. Meschut, The International Journal of Advanced Manufacturing Technology (2021)."},"year":"2021","author":[{"full_name":"Böhnke, Max","id":"45779","last_name":"Böhnke","first_name":"Max"},{"first_name":"Moritz Sebastian","id":"44503","full_name":"Rossel, Moritz Sebastian","last_name":"Rossel"},{"last_name":"Bielak","full_name":"Bielak, Christian Roman","id":"34782","first_name":"Christian Roman"},{"last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850","first_name":"Mathias"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"}],"date_created":"2021-10-06T10:39:08Z","date_updated":"2023-01-17T09:01:52Z","oa":"1","doi":"10.1007/s00170-021-07986-4","main_file_link":[{"url":"https://link.springer.com/article/10.1007/s00170-021-07986-4","open_access":"1"}],"title":"Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes","publication":"The International Journal of Advanced Manufacturing Technology","type":"journal_article","status":"public","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>In order to reduce fuel consumption and thus pollutant emissions, the automotive industry is increasingly developing lightweight construction concepts that are accompanied by an increasing usage of aluminum materials. Due to poor weldability of aluminum in combination with other materials, mechanical joining methods such as clinching were developed and established in series production. In order to predict the relevant characteristics of clinched joints and to ensure the reliability of the process, it is simulated numerically during product development processes. In this regard, the predictive accuracy of the simulated process highly depends on the implemented friction model. In particular, the frictional behavior between the sheet metals as well as between the sheet metal and clinching tools has a significant impact on the geometrical formation of the clinched joint. No testing methods exist that can sufficiently investigate the frictional behavior in sheet materials, especially under high interface pressures, different relative velocities, and long friction paths, while allowing a decoupled consideration of the test parameters. This paper describes the development of further testing concepts based on a proven tribo-torsion test method for determining friction coefficients between sheet metal materials for the simulation of clinching processes. For this purpose, the correlation of interface pressure and the relative velocity between aluminum and steel sheet material in clinching processes is investigated using numerical simulation. Based on these findings, the developed concepts focus on determining friction coefficients at interface pressures of the above materials, yield stress, as well as the reproduction of the occurring friction conditions between sheet metal materials and tool surfaces in clinching processes using tool substitutes. Furthermore, wear investigations between sheet metal material and tool surface were carried out in the friction tests with subsequent EDX analyses of the frictioned tool surfaces. The developed method also allows an optical deformation measurement of the sheet metal material specimen by means of digital image correlation (DIC). Based on a methodological approach, the test setups and the test systems used are explained, and the functionality of the concepts is proven by experimental tests using different sheet metal materials.</jats:p>"}],"department":[{"_id":"157"},{"_id":"630"}],"user_id":"45779","_id":"25556","project":[{"grant_number":"418701707","name":"TRR 285: TRR 285","_id":"130"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"}],"language":[{"iso":"eng"}]},{"status":"public","type":"journal_article","project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"}],"_id":"34227","user_id":"7850","department":[{"_id":"630"},{"_id":"157"}],"citation":{"ieee":"M. S. Rossel, M. Böhnke, C. R. Bielak, M. Bobbert, and G. Meschut, “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes,” <i>Key Engineering Materials</i>, vol. 883, pp. 81–88, 2021, doi: <a href=\"https://doi.org/10.4028/www.scientific.net/kem.883.81\">10.4028/www.scientific.net/kem.883.81</a>.","chicago":"Rossel, Moritz Sebastian, Max Böhnke, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes.” <i>Key Engineering Materials</i> 883 (2021): 81–88. <a href=\"https://doi.org/10.4028/www.scientific.net/kem.883.81\">https://doi.org/10.4028/www.scientific.net/kem.883.81</a>.","ama":"Rossel MS, Böhnke M, Bielak CR, Bobbert M, Meschut G. Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes. <i>Key Engineering Materials</i>. 2021;883:81-88. doi:<a href=\"https://doi.org/10.4028/www.scientific.net/kem.883.81\">10.4028/www.scientific.net/kem.883.81</a>","bibtex":"@article{Rossel_Böhnke_Bielak_Bobbert_Meschut_2021, title={Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes}, volume={883}, DOI={<a href=\"https://doi.org/10.4028/www.scientific.net/kem.883.81\">10.4028/www.scientific.net/kem.883.81</a>}, journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Rossel, Moritz Sebastian and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2021}, pages={81–88} }","short":"M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Key Engineering Materials 883 (2021) 81–88.","mla":"Rossel, Moritz Sebastian, et al. “Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes.” <i>Key Engineering Materials</i>, vol. 883, Trans Tech Publications, Ltd., 2021, pp. 81–88, doi:<a href=\"https://doi.org/10.4028/www.scientific.net/kem.883.81\">10.4028/www.scientific.net/kem.883.81</a>.","apa":"Rossel, M. S., Böhnke, M., Bielak, C. R., Bobbert, M., &#38; Meschut, G. (2021). Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes. <i>Key Engineering Materials</i>, <i>883</i>, 81–88. <a href=\"https://doi.org/10.4028/www.scientific.net/kem.883.81\">https://doi.org/10.4028/www.scientific.net/kem.883.81</a>"},"intvolume":"       883","page":"81-88","publication_status":"published","publication_identifier":{"issn":["1662-9795"]},"doi":"10.4028/www.scientific.net/kem.883.81","date_updated":"2023-03-09T11:43:31Z","author":[{"first_name":"Moritz Sebastian","id":"44503","full_name":"Rossel, Moritz Sebastian","last_name":"Rossel"},{"id":"45779","full_name":"Böhnke, Max","last_name":"Böhnke","first_name":"Max"},{"id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak","first_name":"Christian Roman"},{"last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850","first_name":"Mathias"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246"}],"volume":883,"abstract":[{"text":"In order to reduce the fuel consumption and consequently the greenhouse emissions, the automotive industry is implementing lightweight constructions in the body in white production. As a result, the use of aluminum alloys is continuously increasing. Due to poor weldability of aluminum in combination with other materials, mechanical joining technologies like clinching are increasingly used. In order to predict relevant characteristics of clinched joints and to ensure the reliability of the process, it is simulated numerically during product development processes. In this regard the predictive accuracy of the simulated process highly depends on the implemented friction model. In particular, the frictional behavior between the sheet metals affects the geometrical formation of the clinched joint significantly. This paper presents a testing method, which enables to determine the frictional coefficients between sheet metal materials for the simulation of clinching processes. For this purpose, the correlation of interface pressure and the relative velocity between aluminum sheets in clinching processes is investigated using numerical simulation. Furthermore, the developed testing method focuses on the specimen geometry as well as the reproduction of the occurring friction conditions between two sheet metal materials in clinching processes. Based on a methodical approach the test setup is explained and the functionality of the method is proven by experimental tests using sheet metal material EN AW6014.","lang":"eng"}],"publication":"Key Engineering Materials","keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"language":[{"iso":"eng"}],"year":"2021","quality_controlled":"1","title":"Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes","publisher":"Trans Tech Publications, Ltd.","date_created":"2022-12-05T21:57:07Z"},{"date_updated":"2023-04-27T08:52:48Z","publisher":"University of Liege","author":[{"last_name":"Kappe","id":"66459","full_name":"Kappe, Fabian","first_name":"Fabian"},{"first_name":"Christian Roman","full_name":"Bielak, Christian Roman","id":"34782","last_name":"Bielak"},{"last_name":"Sartisson","full_name":"Sartisson, Vadim","first_name":"Vadim"},{"first_name":"Mathias","full_name":"Bobbert, Mathias","id":"7850","last_name":"Bobbert"},{"first_name":"Gerson","full_name":"Meschut, Gerson","id":"32056","orcid":"0000-0002-2763-1246","last_name":"Meschut"}],"date_created":"2022-12-05T21:45:13Z","title":"Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters","doi":"10.25518/esaform21.4277","publication_status":"published","quality_controlled":"1","year":"2021","citation":{"ama":"Kappe F, Bielak CR, Sartisson V, Bobbert M, Meschut G. Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters. In: <i>ESAFORM 2021</i>. University of Liege; 2021. doi:<a href=\"https://doi.org/10.25518/esaform21.4277\">10.25518/esaform21.4277</a>","ieee":"F. Kappe, C. R. Bielak, V. Sartisson, M. Bobbert, and G. Meschut, “Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters,” 2021, doi: <a href=\"https://doi.org/10.25518/esaform21.4277\">10.25518/esaform21.4277</a>.","chicago":"Kappe, Fabian, Christian Roman Bielak, Vadim Sartisson, Mathias Bobbert, and Gerson Meschut. “Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters.” In <i>ESAFORM 2021</i>. University of Liege, 2021. <a href=\"https://doi.org/10.25518/esaform21.4277\">https://doi.org/10.25518/esaform21.4277</a>.","apa":"Kappe, F., Bielak, C. R., Sartisson, V., Bobbert, M., &#38; Meschut, G. (2021). Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters. <i>ESAFORM 2021</i>. <a href=\"https://doi.org/10.25518/esaform21.4277\">https://doi.org/10.25518/esaform21.4277</a>","bibtex":"@inproceedings{Kappe_Bielak_Sartisson_Bobbert_Meschut_2021, title={Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters}, DOI={<a href=\"https://doi.org/10.25518/esaform21.4277\">10.25518/esaform21.4277</a>}, booktitle={ESAFORM 2021}, publisher={University of Liege}, author={Kappe, Fabian and Bielak, Christian Roman and Sartisson, Vadim and Bobbert, Mathias and Meschut, Gerson}, year={2021} }","mla":"Kappe, Fabian, et al. “Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters.” <i>ESAFORM 2021</i>, University of Liege, 2021, doi:<a href=\"https://doi.org/10.25518/esaform21.4277\">10.25518/esaform21.4277</a>.","short":"F. Kappe, C.R. Bielak, V. Sartisson, M. Bobbert, G. Meschut, in: ESAFORM 2021, University of Liege, 2021."},"project":[{"name":"TRR 285: TRR 285","_id":"130","grant_number":"418701707"},{"_id":"131","name":"TRR 285 - A: TRR 285 - Project Area A"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"},{"name":"TRR 285 - C: TRR 285 - Project Area C","_id":"133"},{"name":"TRR 285 – C02: TRR 285 - Subproject C02","_id":"146"}],"_id":"34222","user_id":"66459","department":[{"_id":"630"},{"_id":"157"}],"language":[{"iso":"fre"}],"type":"conference","publication":"ESAFORM 2021","abstract":[{"text":"Driven by the CO2-emission law by the European government and the increasing costs for raw materials as well as energy, the automotive industry is increasingly using multi-material constructions. This leads to a continuous increase in the use of mechanical joining techniques and especially the self-piercing riveting is of particular importance. The reason for this is the wide range of joining possibilities as well as the high load-bearing capacities of the joints. To be able to react to changing boundary conditions, like material thickness or strength variation of the sheets, research work is crucial with regard to the increase of versatility. In this paper, a numerical study of the influences on the selfpiercing riveting process is presented. For this purpose, the influence of different process parameters such as rivet length and die depth on various quality-relevant characteristics were investigated. With the help of the design of experiment, significant influences were determined and interactions between the individual parameters are shown.","lang":"eng"}],"status":"public"},{"publication":"Journal of Advanced Joining Processes. ","type":"journal_article","status":"public","_id":"20678","project":[{"_id":"130","name":"TRR 285: TRR 285","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"name":"TRR 285 – A01: TRR 285 - Subproject A01","_id":"135"}],"department":[{"_id":"157"}],"user_id":"34782","keyword":["Clinching","process simulation","FEM","pre-straining","sensitivity analysis"],"language":[{"iso":"eng"}],"publication_identifier":{"unknown":["https://doi.org/10.1016/j.jajp.2020.100038"]},"publication_status":"published","year":"2020","citation":{"bibtex":"@article{Bielak_Böhnke_Beck_Bobbert_Meschut_2020, title={Numerical analysis of the robustness of clinching process considering the pre-forming of the parts }, DOI={<a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>}, journal={Journal of Advanced Joining Processes. }, publisher={Elsevier}, author={Bielak, Christian Roman and Böhnke, Max and Beck, Robert and Bobbert, Mathias and Meschut, Gerson}, year={2020} }","short":"C.R. Bielak, M. Böhnke, R. Beck, M. Bobbert, G. Meschut, Journal of Advanced Joining Processes.  (2020).","mla":"Bielak, Christian Roman, et al. “Numerical Analysis of the Robustness of Clinching Process Considering the Pre-Forming of the Parts .” <i>Journal of Advanced Joining Processes. </i>, Elsevier, 2020, doi:<a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>.","apa":"Bielak, C. R., Böhnke, M., Beck, R., Bobbert, M., &#38; Meschut, G. (2020). Numerical analysis of the robustness of clinching process considering the pre-forming of the parts . <i>Journal of Advanced Joining Processes. </i>. <a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>","ama":"Bielak CR, Böhnke M, Beck R, Bobbert M, Meschut G. Numerical analysis of the robustness of clinching process considering the pre-forming of the parts . <i>Journal of Advanced Joining Processes </i>. Published online 2020. doi:<a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>","ieee":"C. R. Bielak, M. Böhnke, R. Beck, M. Bobbert, and G. Meschut, “Numerical analysis of the robustness of clinching process considering the pre-forming of the parts ,” <i>Journal of Advanced Joining Processes. </i>, 2020, doi: <a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>.","chicago":"Bielak, Christian Roman, Max Böhnke, Robert Beck, Mathias Bobbert, and Gerson Meschut. “Numerical Analysis of the Robustness of Clinching Process Considering the Pre-Forming of the Parts .” <i>Journal of Advanced Joining Processes. </i>, 2020. <a href=\"https://doi.org/10.1016/j.jajp.2020.100038\">https://doi.org/10.1016/j.jajp.2020.100038</a>."},"date_updated":"2022-03-24T09:39:11Z","publisher":"Elsevier","date_created":"2020-12-02T16:21:34Z","author":[{"last_name":"Bielak","id":"34782","full_name":"Bielak, Christian Roman","first_name":"Christian Roman"},{"last_name":"Böhnke","full_name":"Böhnke, Max","id":"45779","first_name":"Max"},{"first_name":"Robert","last_name":"Beck","id":"38279","full_name":"Beck, Robert"},{"last_name":"Bobbert","full_name":"Bobbert, Mathias","id":"7850","first_name":"Mathias"},{"last_name":"Meschut","orcid":"0000-0002-2763-1246","id":"32056","full_name":"Meschut, Gerson","first_name":"Gerson"}],"title":"Numerical analysis of the robustness of clinching process considering the pre-forming of the parts ","doi":"https://doi.org/10.1016/j.jajp.2020.100038"},{"ddc":["670","620"],"language":[{"iso":"ger"},{"iso":"eng"}],"file":[{"file_id":"34158","file_name":"Development of a numerical method for analyzing the robustness of clinching in versatile process chains.pdf","access_level":"open_access","description":"In many areas of product manufacturing individual components are usually joined together to form complex structures with numerous joints. Using mechanical joining technologies offers the possibility of joining structures with a wide range of material-geometry combinations. In order to realize the increasing number of varying products using different materials and designs within a process chain, they need to be versatile.","file_size":2657497,"title":"Development of a numerical method for analyzing the robustness of clinching in versatile process chains","date_created":"2022-11-29T13:23:05Z","creator":"chbielak","date_updated":"2022-11-29T13:23:05Z","relation":"main_file","content_type":"application/pdf"}],"date_created":"2020-11-12T13:38:45Z","title":"Development of a numerical method for analyzing the robustness of clinching in versatile process chains","year":"2020","project":[{"grant_number":"418701707","_id":"130","name":"TRR 285: TRR 285"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"_id":"135","name":"TRR 285 – A01: TRR 285 - Subproject A01"}],"_id":"20344","user_id":"14931","department":[{"_id":"157"},{"_id":"630"}],"file_date_updated":"2022-11-29T13:23:05Z","type":"conference_abstract","status":"public","oa":"1","date_updated":"2023-01-02T12:01:43Z","author":[{"id":"34782","full_name":"Bielak, Christian Roman","last_name":"Bielak","first_name":"Christian Roman"},{"first_name":"Max","id":"45779","full_name":"Böhnke, Max","last_name":"Böhnke"},{"first_name":"Mathias","id":"7850","full_name":"Bobbert, Mathias","last_name":"Bobbert"},{"first_name":"Gerson","id":"32056","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut"}],"conference":{"location":"Darmstadt","end_date":"25 September 2020","start_date":"22 September 2020","name":"Material Science and Engineering Congress - MSE 2020"},"publication_status":"accepted","has_accepted_license":"1","related_material":{"link":[{"description":"In many areas of product manufacturing individual components are usually joined together to form complex structures with numerous joints. Mechanical joining technology offers the possibility of joining structures with a wide range of material-geometry combinations. In order to realize the increasing number of varying products using different materials and designs within a process chain, they need to be versatile.\r\n\r\nDue to changing properties of the materials to be joined, tool geometries and process variables in mechanical joining processes, especially clinching, must be continuously adapted which results in a limited versatility of the process. In this regard, it is necessary to examine the robustness of the clinching process in versatile process chains. Therefore, a method is developed which describes the joint characteristics based on the material properties in order to enable the investigation of the clinching process regarding the robustness concerning continuously changing process and material conditions.\r\n\r\nThe predictive accuracy of numerical simulations for mechanical joining processes depends on the implemented material model, especially the plasticity of the joining parts. Therefore, experimental material characterization processes are used to determine material properties. Furthermore, clinched joints in different material combinations are experimentally generated and examined. Based on these investigations a simulation model of the joining process is developed as 2D-Clinching FEM model in LS-Dyna. The Validation of the developed simulation model is ensured by comparing the geometric formation of the joint and force-displacement curves of the joining process with experimental generated joints. By combining the simulation model with an optimization tool (LS-OPT) the influence of different parameters on the joint characteristics is determined and the robustness of the joining process in versatile process chains is investigated.","relation":"confirmation","url":"https://www.mse-congress.de/program/scientific-program/?tx_dgmprogram_fullprogram%5Bsession%5D=9629&tx_dgmprogram_fullprogram%5Baction%5D=show&tx_dgmprogram_fullprogram%5Bcontroller%5D=Session&cHash=84006c1cdd38f631b19682a33e47111e"}]},"place":"Material Science and Engineering Congress - MSE 2020","citation":{"ama":"Bielak CR, Böhnke M, Bobbert M, Meschut G. Development of a numerical method for analyzing the robustness of clinching in versatile process chains.","ieee":"C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Development of a numerical method for analyzing the robustness of clinching in versatile process chains,” presented at the Material Science and Engineering Congress - MSE 2020, Darmstadt.","chicago":"Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut. “Development of a numerical method for analyzing the robustness of clinching in versatile process chains.” Material Science and Engineering Congress - MSE 2020, n.d.","mla":"Bielak, Christian Roman, et al. <i>Development of a numerical method for analyzing the robustness of clinching in versatile process chains</i>.","bibtex":"@inproceedings{Bielak_Böhnke_Bobbert_Meschut, place={Material Science and Engineering Congress - MSE 2020}, title={Development of a numerical method for analyzing the robustness of clinching in versatile process chains}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson} }","short":"C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: Material Science and Engineering Congress - MSE 2020, n.d.","apa":"Bielak, C. R., Böhnke, M., Bobbert, M., &#38; Meschut, G. (n.d.). <i>Development of a numerical method for analyzing the robustness of clinching in versatile process chains</i>. Material Science and Engineering Congress - MSE 2020, Darmstadt."}}]