@book{44199, author = {{Chudalla, Nick and Meschut, Gerson and Teutenberg, Dominik and Wibbeke, Michael and Bartley, Aurélie}}, isbn = {{978-3-96780-135-4}}, publisher = {{Forschungsvereinigung Stahlanwendung e. V.}}, title = {{{Analyse des Versagensverhaltens geklebter Stahl- Verbindungen beim werkstoffschonenden Entfügen in der Karosserieinstandsetzung}}}, year = {{2022}}, } @book{44209, author = {{Schmolke, Tobias and Meschut, Gerson and Vieth, Pascal and Meinderink, Dennis and Grundmeier, Guido}}, publisher = {{Forschungsvereinigung Stahlanwendung e. V.}}, title = {{{Entwicklung einer Methode zur Bewertung einer stahlintensiven Mischbau-Klebverbindung eines Batteriegehäuses gegenüber mechanischer und medialer Belastung unter Berücksichtigung der Interphasenstruktur }}}, year = {{2022}}, } @book{44213, author = {{Göddecke, Johannes and Meschut, Gerson and Kötz, Fabian and Matzenmiller, Anton and Damm, Jannis and Albiez, Matthias and Ummenhofer, Thomas}}, isbn = {{978-3-96780-137-8}}, pages = {{404}}, publisher = {{Forschungsvereinigung Stahlanwendung e.V.}}, title = {{{Experimentelle und numerische Untersuchung der Dämpfungseigenschaften geklebter Strukturen unter dynamischer Beanspruchung}}}, year = {{2022}}, } @article{34216, abstract = {{Mechanical joining technologies are increasingly used in multi-material lightweight constructions and offer opportunities to create versatile joining processes due to their low heat input, robustness to metallurgical incompatibilities and various process variants. They can be categorised into technologies which require an auxiliary joining element, or do not require an auxiliary joining element. A typical example for a mechanical joining process with auxiliary joining element is self-piercing riveting. A wide range of processes exist which are not requiring an auxiliary joining element. This allows both point-shaped (e.g., by clinching) and line-shaped (e.g., friction stir welding) joints to be produced. In order to achieve versatile processes, challenges exist in particular in the creation of intervention possibilities in the process and the understanding and handling of materials that are difficult to join, such as fiber reinforced plastics (FRP) or high-strength metals. In addition, predictive capability is required, which in particular requires accurate process simulation. Finally, the processes must be measured non-destructively in order to generate control variables in the process or to investigate the cause-effect relationship. This paper covers the state of the art in scientific research concerning mechanical joining and discusses future challenges on the way to versatile mechanical joining processes.}}, author = {{Meschut, Gerson and Merklein, M. and Brosius, A. and Drummer, D. and Fratini, L. and Füssel, U. and Gude, M. and Homberg, Werner and Martins, P.A.F. and Bobbert, Mathias and Lechner, M. and Kupfer, R. and Gröger, B. and Han, Daxin and Kalich, J. and Kappe, Fabian and Kleffel, T. and Köhler, D. and Kuball, C.-M. and Popp, J. and Römisch, D. and Troschitz, J. and Wischer, Christian and Wituschek, S. and Wolf, M.}}, issn = {{2666-3309}}, journal = {{Journal of Advanced Joining Processes}}, keywords = {{Mechanical Engineering, Mechanics of Materials, Engineering (miscellaneous), Chemical Engineering (miscellaneous)}}, publisher = {{Elsevier BV}}, title = {{{Review on mechanical joining by plastic deformation}}}, doi = {{10.1016/j.jajp.2022.100113}}, volume = {{5}}, year = {{2022}}, } @inproceedings{42874, author = {{Göddecke, Johannes and Meschut, Gerson and Göhrs, Tim and Große Gehling, Manfred}}, location = {{Webkonferenz}}, title = {{{Methodenentwicklung zur Auslegung geklebter Verbindungen aus hochfestem Stahl unter Berücksichtigung betriebsrelevanter Beanspruchungen im Landmaschinen- und Anlagenbau}}}, year = {{2022}}, } @inproceedings{42875, author = {{Göddecke, Johannes and Meschut, Gerson}}, location = {{Koblenz}}, title = {{{Dämpfungseigenschaften geklebter Strukturen unter dynamischer Beanspruchung}}}, year = {{2022}}, } @article{43156, abstract = {{The use of mechanical joining technologies offers the possibility of joining mixed material structures, which are used in particular in lightweight construction. An integrated securing of the joinability in versatile process chains is currently hardly possible as the number of combinable tool variants as well as variable force- and path-based process parameters is infinite. A versatile process chain, i.e. a sequence of all the processes and process steps required for product manufacturing, enables targeted changes to the semi-finished product, the joint, the component or the joining process that exceed the originally planned extend while still ensuring joinability. In detail, it leads to a unique joint with its own mechanical property profile, which, against the background of the resulting infinite number of combinations, makes it impossible to secure the joinability on the conventional experimentally based approach without extensive safety factors. The Transregional Colaborative Research Center 285 (TCRC285), which also initiated this special issue, is intended to enable mechanical joining technology to be versatile in the sense of high application flexibility. This is to be achieved with a numerical representation of the complete process chain from the incoming semi finished product via the joining part production and the joining process to the property profile of the joint in the operating phase. Thus a predictability of the joinability can be achieved and improvements in the individual life cycles of a joint can be realized by grasping the cause-and-effect relationships. On the basis of this knowledge, new possibilities for intervention in the joining process are to be created for the adaptation of the joining processes. With the aid of the methods developed for this purpose, tools will later be available to the end user to substitute the large number of mechanical joining processes or joining task-specific configurations with a smaller number of adaptable processes. This expands the flexibility in material choices, enabling challenges in environmental issues and sustainability to be overcome.}}, author = {{Meschut, Gerson and Merklein, Marion and Brosius, Alexander and Bobbert, Mathias}}, issn = {{0944-6524}}, journal = {{Production Engineering}}, keywords = {{Industrial and Manufacturing Engineering, Mechanical Engineering}}, number = {{2-3}}, pages = {{187--191}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Mechanical joining in versatile process chains}}}, doi = {{10.1007/s11740-022-01125-y}}, volume = {{16}}, year = {{2022}}, } @article{43155, author = {{Schmolke, Tobias and Meschut, Gerson and Meinderink, Dennis and Rieker, Florian and Grundmeier, Guido}}, issn = {{1619-1919}}, journal = {{adhäsion KLEBEN & DICHTEN}}, keywords = {{Polymers and Plastics, General Chemical Engineering, General Chemistry}}, number = {{6}}, pages = {{40--43}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Untersuchung von Klebverbindungen für Batteriegehäuse}}}, doi = {{10.1007/s35145-022-0596-9}}, volume = {{66}}, year = {{2022}}, } @article{43157, author = {{Werner, Matthias and Wagner, Jonas and Ribbeck, Florian and Hensel, Simon and Goth, Klaus and Graf, Thomas and Meschut, Gerson}}, issn = {{2212-8271}}, journal = {{Procedia CIRP}}, keywords = {{General Medicine}}, pages = {{513--517}}, publisher = {{Elsevier BV}}, title = {{{Influence of the incident angle on the OCT measurement during remote laser beam welding}}}, doi = {{10.1016/j.procir.2022.08.081}}, volume = {{111}}, year = {{2022}}, } @article{34241, abstract = {{Due to the increasing use of multi-material constructions and the resulting material incompatibilities, mechanical joining technologies are gaining in importance. The reasons for this are the variety of joining possibilities as well as high load-bearing capacities. However, the currently rigid tooling systems cannot react to changing boundary conditions, such as changed sheet thicknesses or strength. For this reason, a large number of specialised joining processes have been developed to expand the range of applications. Using a versatile self-piercing riveting process, multi-material structures are joined in this paper. In this process, a modified tool actuator technology is combined with multi-range capable auxiliary joining parts. The multi-range capability of the rivets is achieved by forming the rivet head onto the respective thickness of the joining part combination without creating a tooling set-up effort. The joints are investigated both experimentally on the basis of joint formation and load-bearing capacity tests as well as by means of numerical simulation. It turned out that all the joints examined could be manufactured according to the defined standards. The load-bearing capacities of the joints are comparable to those of conventionally joined joints. In some cases the joint fails prematurely, which is why lower energy absorptions are obtained. However, the maximum forces achieved are higher than those of conventional joints. Especially in the case of high-strength materials arranged on the die side, the interlock formation is low. In addition, the use of die-sided sheets requires a large deformation of the rivet head protrusion, which leads to an increase in stress and, as a result, to damage if the rivet head. However, a negative influence on the joint load-bearing capacity could be excluded.}}, author = {{Kappe, Fabian and Wituschek, Simon and Bobbert, Mathias and Lechner, Michael and Meschut, Gerson}}, issn = {{0944-6524}}, journal = {{Production Engineering}}, keywords = {{Industrial and Manufacturing Engineering, Mechanical Engineering}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Joining of multi-material structures using a versatile self-piercing riveting process}}}, doi = {{10.1007/s11740-022-01151-w}}, year = {{2022}}, } @article{30100, abstract = {{Since the application of mechanical joining methods, such as clinching or riveting, offers a robust solution for the generation of advanced multi-material connections, the use in the field of lightweight designs (e.g. automotive industry) is steadily increasing. Therefore, not only the design of an individual joint is required but also the dimensioning of the entire joining connection is crucial. However, in comparison to thermal joining techniques, such as spot welding, the evaluation of the joints’ resistance against defined requirements (e.g. types of load, minimal amount of load cycles) mainly relies on the consideration of expert knowledge, a few design principles and a small amount of experimental data. Since this generally implies the involvement of several domains, such as the material characterization or the part design, a tremendous amount of data and knowledge is separately generated for a certain dimensioning process. Nevertheless, the lack of formalization and standardization in representing the gained knowledge leads to a difficult and inconsistent reuse, sharing or searching of already existing information. Thus, this contribution presents a specific ontology for the provision of cross-domain knowledge about mechanical joining processes and highlights two potential use cases of this ontology in the design of clinched and pin joints.}}, author = {{Zirngibl, Christoph and Kügler, Patricia and Popp, Julian and Bielak, Christian Roman and Bobbert, Mathias and Drummer, Dietmar and Meschut, Gerson and Wartzack, Sandro and Schleich, Benjamin}}, issn = {{0944-6524}}, journal = {{Production Engineering}}, keywords = {{Industrial and Manufacturing Engineering, Mechanical Engineering}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Provision of cross-domain knowledge in mechanical joining using ontologies}}}, doi = {{10.1007/s11740-022-01117-y}}, year = {{2022}}, } @article{30884, abstract = {{Lightweight design is an effective lever for achieving fuel consumption and emission-oriented goals. Therefore micro-alloyed steels and high-strength aluminium materials are included in the multi-material mix of the car body. In this context self-pierce riveting has become established for joining in body-in-white production. For the dimensioning of the joint, numerical simulation is increasingly being used. In order to make reliable predictions about joint quality, knowledge of the friction in the joining process is necessary and needs to be identified experimentally. In previous investigations, the process parameters in the friction test were not comparable to the joining process. Therefore, a new friction test method is presented in this paper, where the process conditions are comparable between joining and friction testing especially regarding the interface pressure. The local joining process parameters between rivet and sheet are derived numerically. In the framework of the investigations, the influences of the local joining process parameters, like interface pressure, relative velocity and temperature, on the friction are investigated and mapped close to the joining process. Additionally a comparison of different rivet coatings is carried out. The rivet contact to the sheet metal HX340LAD as well with aluminium EN AW-5182 is taken into account.}}, author = {{Rossel, Moritz Sebastian and Meschut, Gerson}}, journal = {{Production Engineering}}, title = {{{Investigation of the friction conditions of self-pierce rivets by means of a compression-torsion tribometer}}}, doi = {{https://doi.org/10.1007/s11740-022-01126-x}}, year = {{2022}}, } @inbook{34275, abstract = {{Due to economic and ecological requirements and the associated trend towards lightweight construction, mechanical joining technologies like self-piercing riveting are gaining in importance. In addition, the increase in lightweight multi-material joints has led to the development of many different mechanical joining technologies which can only be applied to join a small number of material combinations. This leads to low process efficiency, and in the case of self-piercing riveting, to a large number of required tool changes. Another approach focuses on reacting to changing boundary conditions as well as the creation of customised joints by using adaptive tools, versatile auxiliary joining parts or modified process kinematics. Therefore, this study investigates the influence of increased die-sided kinematics on joint formation in self-piercing riveting process. The aim is to achieve an improvement of the joint properties by superimposing the punch feed. Furthermore, it is intended to reduce required tool changes due to the improved joint design. The investigations were carried out by means of a 2D-axisymmetric numerical simulation model using the LS-Dyna simulation software. After the validation of the process model, the die was extended to include driven die elements. Using the model, different kinematics as well as their effects on the joint formation and the internal stress concentration could be analysed. In principle, the increased actuator technology enabled an increase of the interlock formation for both pure aluminium and multi-material joints consisting of steel and aluminium. However, the resulting process forces were higher during the process phases of punching and spreading.}}, author = {{Kappe, Fabian and Wituschek, Simon and de Pascalis, Vincenzo and Bobbert, Mathias and Lechner, Michael and Meschut, Gerson}}, booktitle = {{Materials Design and Applications IV}}, isbn = {{9783031181290}}, issn = {{1869-8433}}, publisher = {{Springer International Publishing}}, title = {{{Numerical Investigation of the Influence of a Movable Die Base on Joint Formation in Semi-tubular Self-piercing Riveting}}}, doi = {{10.1007/978-3-031-18130-6_10}}, year = {{2022}}, } @article{34244, author = {{Kappe, Fabian and Zirngibl, Christoph and Schleich, Benjamin and Bobbert, Mathias and Wartzack, Sandro and Meschut, Gerson}}, issn = {{1526-6125}}, journal = {{Journal of Manufacturing Processes}}, keywords = {{Industrial and Manufacturing Engineering, Management Science and Operations Research, Strategy and Management}}, pages = {{1438--1448}}, publisher = {{Elsevier BV}}, title = {{{Determining the influence of different process parameters on the versatile self-piercing riveting process using numerical methods}}}, doi = {{10.1016/j.jmapro.2022.11.019}}, volume = {{84}}, year = {{2022}}, } @article{29858, author = {{Kappe, Fabian and Schadow, Luca and Bobbert, Mathias and Meschut, Gerson}}, journal = {{Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications}}, title = {{{Increasing flexibility of self-piercing riveting by reducing tool–geometry combinations using cluster analysis in the application of multi-material design}}}, doi = {{10.1177/14644207211070992}}, year = {{2022}}, } @article{29857, author = {{Kappe, Fabian and Wituschek, Simon and Bobbert, Mathias and Meschut, Gerson}}, journal = {{Production Engineering}}, title = {{{Determining the properties of multi‑range semi‑tubular self‑piercing riveted joints}}}, doi = {{https://doi.org/10.1007/s11740-022-01105-2}}, year = {{2022}}, } @inproceedings{36838, author = {{Neumann, Stefan and Meschut, Gerson and Otroshi, Mortaza and Kneuper, Florian and Schulze, Andre and Tekkaya, Erman}}, title = {{{MECHANICALLY JOINED EXTRUSION PROFILES FOR BATTERY TRAYS}}}, year = {{2022}}, } @article{30736, abstract = {{In this study, an innovative friction model is used to improve the quality of clinching process simulations. Consequently, the future over dimensioning can be reduced. Furthermore, the improved prediction quality of the joining process simulation leads to an improvement in the simulation of load-bearing capacity as well. In this way, the entire sampling process can be performed virtually without any experimental investigations. This will contribute to the advancement of lightweight construction in the automotive industry. In this work, the frictional behavior is studied in dependence on the local joining process parameters. As a reference for the numerical investigations, clinch joints by means of a die with fixed geometry are joined. Additionally, a hardness mapping is performed on the microsection of the clinch joints. It shows the local strain hardening, which correlates with the forming degree in the simulation. Based on the occurring contacts and the local joining process parameters in the joining process simulation, the test matrix for the experimental friction tests is defined. The friction tests are carried out on a compression-torsion-tribometer. This type of tribometer is able to apply high interface pressures above the initial yield stress due to the specimen encapsulation. Besides, the pure joining part contact, the contact between the joining part and joining tool can be tested as well. The experimental test setup offers the possibility to evaluate the influences of temperature, relative velocity, interface pressure, and frictional stroke independently. Based on the results of the experimental friction tests, a friction model is created. The resulting friction model is integrated into the numerical joining process simulation via a subroutine. To validate the quality of the new friction modeling, the results of simulations are compared with the experiments in terms of load-stroke diagrams, joint geometry, and hardness mappings on the microsection. }}, author = {{Rossel, Moritz Sebastian and Meschut, Gerson}}, issn = {{1464-4207}}, journal = {{Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}}, keywords = {{Mechanical Engineering, General Materials Science}}, publisher = {{SAGE Publications}}, title = {{{Increasing the accuracy of clinching process simulations by modeling the friction as a function of local joining process parameters}}}, doi = {{10.1177/14644207221074290}}, year = {{2022}}, } @article{28766, author = {{Sander, Sascha and Meschut, Gerson and Kroll, U. and Matzenmiller, A.}}, issn = {{0143-7496}}, journal = {{International Journal of Adhesion and Adhesives}}, publisher = {{Elsevier}}, title = {{{Methodology for the systematic investigation of the hygrothermal-mechanical behavior of a structural epoxy adhesive}}}, doi = {{10.1016/j.ijadhadh.2021.103072}}, year = {{2022}}, } @article{30962, abstract = {{ 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. }}, author = {{Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut, Gerson}}, issn = {{1464-4207}}, journal = {{Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}}, keywords = {{Mechanical Engineering, General Materials Science}}, publisher = {{SAGE Publications}}, title = {{{Numerical investigation of a friction test to determine the friction coefficients for the clinching process}}}, doi = {{10.1177/14644207221093468}}, year = {{2022}}, }