A calibration method for failure modeling in clinching process simulations

A calibration method for failure modeling in clinching process simulations

Max Böhnke, Christian Roman Bielak, Johannes Friedlein, Mathias Bobbert, Julia Mergheim, Gerson Meschut, Paul Steinmann

Abstract. In the numerical simulation of mechanical joining technologies such as clinching, the material modeling of the joining parts is of major importance. This includes modeling the damage and failure behavior of the materials in accordance with varying occurring stress states. This paper presents a calibration method of three different fracture models. The calibration of the models is done by use of experimental data from a modified punch test, tensile test and bulge test in order to map the occurring stress states from clinching processes and to precisely model the resulting failure behavior. Experimental investigations were carried out for an aluminum alloy
EN AW-6014 in temper T4 and compared with the simulative results generated in LS-DYNA. The comparison of force-displacement curves and failure initiation shows that the Hosford–Coulomb model predicts the failure behavior for the material used and the tests applied with the best accuracy.

Keywords
Damage, Failure, Clinching

Published online 3/17/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Max Böhnke, Christian Roman Bielak, Johannes Friedlein, Mathias Bobbert, Julia Mergheim, Gerson Meschut, Paul Steinmann, A calibration method for failure modeling in clinching process simulations, Materials Research Proceedings, Vol. 25, pp 271-278, 2023

DOI: https://doi.org/10.21741/9781644902417-34

The article was published as article 34 of the book Sheet Metal 2023

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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