|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Prediction of Failure in Sheet Metal Forming Simulation - An Integrated Approach for Shell and Solid Discretization
||Helmut Arnulf Gese, Gernot Oberhofer, Harry Dell, Matthias Reissner
|On-Site Speaker (Planned)
||Helmut Arnulf Gese
The lecture gives an overview on the general concept of the modular material model MF GenYld+Crach-FEM to predict material failure in sheet metals. A prerequisite for failure prediction is the precise modelling of the strain field in a sheet (with module GenYld). The concept of CrachFEM – the failure module - is based on a prediction of localized necking (LN) with algorithm Crach and prediction of fracture due to ductile normal fracture (DNF) and ductile shear fracture (DSF). A comprehensive failure model has to account for cases with non-linear strain paths. In case of LN a combined isotropic-kinematic hardening model is used in the algorithm Crach. In case of fracture an integral damage accumulation is used together with a tensorial description of damage. The concept of CrachFEM can be used for shell and solid discretization. Experiments with non-linear strain paths will be compared with predictions of CrachFEM.
||Definite: At-meeting proceedings