关键词: 子模型, 应力恢复方法, 车身结构分析, 仿真精度, 计算效率

Abstract:

This paper applied the submodel technique on a mini-van for vehicle strength analysis. We introduced stress recovery approach to obtain accurate submodel boundary conditions, and the comparison between the results of submodel analysis and vehicle model analysis shows the credibility of the submodel approach.Then mesh refinement process was done on the submodel to guarantee the calculation converges over mesh size.Convergence analysis results show that with the ability of obtaining the accurate solution for critical stress area, the submodel technique ensures computational efficiency and improves the simulation accuracy,which shows
the high significance on engineering guidance of the submodel technique.

Key words: submodel, stress recovery, body structure analysis, simulation accuracy, computational efficiency