PSI - Issue 73

Martin Krejsa et al. / Procedia Structural Integrity 73 (2025) 81–86 Martin Krejsa, Petr Lehner, Jakub Flodr / Structural Integrity Procedia 00 (2025) 000–000

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4. Conclusions The paper presents the results of an investigation into the mechanical behavior of clinch joints in 3.45 mm thick S390GD steel. Through a combination of experimental tests and finite element modelling, the research has provided valuable insights into the failure mechanisms and force-displacement characteristics of these joints. Comparison of the experimental results and the numerical models, especially after accounting for electromechanical machine slip, revealed a good correlation, confirming the accuracy of the numerical approach. The analysis confirmed that the typical failure mode under shear loading occurs at the neck of the lap joint and is caused by a combination of shear and bending stresses. Acknowledgements This contribution has been developed as part of the research project of the Czech Science Foundation 25-15763S ”Structural steels behavior of thin-walled load-bearing elements during cold joining”. References ANSYS, 2020. ANSYS Meshing User’s Guide [WWW Document]. ANSYS User Guide. URL https://customercenter.ansys.com/ (accessed 10.29.20). Atia, M.K.S.S., Jain, M.K., 2018. Finite element analysis of material flow in die-less clinching process and joint strength assessment. Thin-Walled Structures 127, 500–515. https://doi.org/10.1016/j.tws.2018.03.001 Bernuzzi, C., Maxenti, F., 2015. European alternatives to design perforated thin-walled cold-formed beam-columns for steel storage systems. J Constr Steel Res. https://doi.org/10.1016/j.jcsr.2015.02.021 Flodr, J., Kałduński, P., Krejsa, M., Pařenica, P., 2017. Innovative Connection of Steel Profiles, Experimental Verification and Application. Procedia Eng 190, 215–222. https://doi.org/10.1016/j.proeng.2017.05.329 Flodr, J., Lehner, P., Krejsa, M., 2020. Experimental and numerical evaluation of clinch connections of thin-walled building structures. Sustainability (Switzerland) 12. https://doi.org/10.3390/su12145691 Hamel, V., Roelandt, J.M., Gacel, J.N., Schmit, F., 2000. Finite element modeling of clinch forming with automatic remeshing. Comput Struct 77, 185–200. https://doi.org/10.1016/S0045-7949(99)00207-2 Lambiase, F., Di Ilio, A., 2014. An experimental study on clinched joints realized with different dies. Thin-Walled Structures. https://doi.org/10.1016/j.tws.2014.08.004 Lei, L., He, X., Yu, T., Xing, B., 2019. Failure modes of mechanical clinching in metal sheet materials. Thin-Walled Structures 144, 106281. https://doi.org/10.1016/j.tws.2019.106281 Varis, J.P., Lepistö, J., 2003. A simple testing-based procedure and simulation of the clinching process using finite element analysis for establishing clinching parameters. Thin-Walled Structures 41, 691–709. https://doi.org/10.1016/S0263-8231(03)00026-0