EXPERIENCE WITH CRASH SIMULATIONS USING AN IGA BODY IN WHITE

With the IGA (Isogeometric Analysis) technological approach [1], the transfer processes from CAD to CAE can be simplified in the future and false predictions due to discretization effects can be reduced. In recent years, IGA and the corresponding toolset has increasingly developed into a setup that comes close to industrial use [2]. In order to test the use of IGA in industrial environments, a body in white (BIW) that was previously modelled with a „classic“ FE approach was also modelled with IGA and installed in a so-called hybrid model in a full vehicle crash simulation. For this purpose, the CAD data used as the basis for the FE model creation was used to directly create IGA surfaces. The aim of implementing a body in white using IGA was, on the one hand, to look at the processes in terms of usability, automation capability and implementation quality; and, on the other hand, to understand how hybrid crash simulations behave in terms of computing time and stability. In order to see different design effects in crash simulations, a front crash and a side crash were carried out and compared with existing FE models. The investigations show the entire process, from geometry conversion to full vehicle simulation and explain the findings in comparison with the FE model.