Application of statistically similar representative volume element in numerical simulations of crash box stamping

The paper presents multiscale simulations of the crash box, which is being widely used in automotive industry, because of its high influence on improvement of passengers safety. The multiscale simulations are presented with application of statistically similar representative volume element (SSRVE), which besides offering the reliability of conventional representative volume element (RVE), gives much shorter computational time. At first, the idea of SSRVE with examples obtained for HCT600 steel, used for crash box production, is presented. Then macroscale model of crash box is described in details, as well as the results obtained for macroscale simulations. Finally, the introduction of SSRVE into the multiscale simulations is shown. The results for the created multiscale approach prove that the proposed solution offers the possibility of better estimation of final product properties on the basis of microstructural information and that it can be efficiently used in industrial conditions.