RVE simulations using GTN and CZM model were performed for different sheet metal forming tests. The RVEs
were chosen to model critical locations within the samples where crack initiation was experimentally detected. The
intention was to study the influence of the triaxiality on crack initiation in relation the microstructures. Thus,
boundary conditions for the RVEs were obtained from the local deformation fields in the macroscopic simulations.
This is a weak macro-micro-coupling as the two simulations on different scales were carried out in succession