根据以上结果，设计出符合制造、安装等要求的换挡机构安装钣金的结构如下图所示。

5 优化分析结果

由以上分析，得到优化分析结果如下表所示。

由以上表中的结果可以得出使用OptiStruct的Topology和Topography相结合的功能，得到零件的最优结构，大幅的提升了安装点刚度并且减轻了重量。

6 结论

Altair公司的OptiStruct软件，是一款功能强大的优化器，可以有效的对产品进行结构优化分析。通过对实际问题的深入分析并结合该软件的灵活应用，能够在工程应用中达到很好的效果。

7 参考文献

[1] HyperWorks Users Manual, Tutorials: Altair

OptiStruct Application in Improving Attachment Points Stiffness
Wei Yuankui

Abstract: CAE technology is widely applied in auto design field. The cost is decreased enormously and the period of development is shorten by virtual simulation. OptiStruct is used during improving of one type car’s shift lever attachment points stiffness. The structural optimization was proposed in the short period time.

Key words: OptiStruct Attachment point stiffness Shift lever CAE