Comparison between visioplasticity measurements and finite element computations for tensile tests on cold rolled perforated ferritic chromium steel P92

Abstract Finite element computations for tensile tests on cold rolled perforated sheet metals are compared to experimental tests with simultaneous visioplasticity measurements to determine requirements for the use of detailed FEM models. First, force–displacement curves and in the secondly the local strains have been compared. The obtained results show that the perforation geometry does not need to be depicted exactly in the FEM-model, an approximation with simple geometries like cylinders deliver reasonable results. Furthermore, the computed tensile test on perforated sheet metals with 2D-FEM models is more acceptable than wide-meshed 3D-models.