As the competition in the new energy passenger vehicle market continues to
intensify, OEMs are accelerating the deployment and replacement of new energy
vehicles. Therefore, higher requirements are being put forward for the research
and development cycle of vehicle models, especially in the field of CAE virtual
verification. The durability simulation analysis and verification cycle of white
body is the longest, becoming one of the bottlenecks restricting the compression
of project research and development cycles.
This paper proposes an integrated technology route of virtual simulation
replacing physical verification. By applying virtual proving ground (VPG) and
virtual wheel coupling bench simulation technology, the durability simulation
calculation of the body in white (BIW) with “zero sample vehicle and zero test”
is achieved. Pseudo damage sensitivity analysis technology is used to simplify
the analysis of working conditions and support the rapid verification and
improvement of the body in white before prototype production in the design
phase. The research and application results indicate that the integrated
technology of virtual simulation for body in white can accurately identify the
risk of solder joint failure in white body, significantly shorten the
verification cycle by 70%, the accuracy of pseudo damage calibration meets
0.8-1.2, and has high engineering application value.