以上分析结果（图6 和图7）可以看出，方案一的施力点位移变化量略有减小，但未达到目标要求；而方案二的施力点位移变化量下降13.36%，到达4.28mm，低于目标4.4mm，说明该方案能够有效提高行李箱盖的内板刚性。

4实车验证

根据方案二的建议，将行李箱盖左右铰链加强板加长后进行强度耐久试验测试，发现问题点已改善，不存在难以扣锁的问题。试验结果表明，优化方案二满足设计指标要求，达到了结构优化改进的目标。

5结论

本文利用HyperWorks软件建立行李箱盖总成有限元模型，并对行李箱盖进行结构强度仿真分析。针对原先的设计问题点提出2种优化改进方案，对仿真结果进行对比分析，选取其中最佳的优化方案，并最终通过试验验证该结构优化改进是可行的。

HyperWorks Application on Optimization of Vehicle Trunk

Chen Ji   Song Mingyang   Xing Zhiyuan

Abstract ：In the light of the trunk panels are distortion due to insufficiency stiffness, the lock latch is difficult to lock up in the strength testing. The FEM model of the trunk built by HyperWorks was simulated by OptiStruct, and then we put forward the best suggestion by comparison with the benchmark. As a result, the scheme was satisfied the design requirement of strength test.

Key words: HyperWorks    trunk   structure strength