A Simulation Analysis and Optimization of Mode and Stiffness of BIW

摘要

Based on the compartmentalized grids, simulation analyses of the mode and stiffness of BIW were performed by using the FEM software; further validation had been conducted through a series of experiments. By comparing the results, it was proved that the BIW models as well as the simulation method were rational and reliable. The coherence of the stiffness from both sides of BIW was validated too. Finally, the BIW model was optimized in order to improve the local modes for a better body design and vehicle NVH. This article is suitable for body design and the future FEA research as reference.