摘要
提出了一种新的基于应力突变率的双向进化结构优化方法,以进化优化过程中一次删除或添加单元后,新旧拓扑结构的应力突变率作为添加单元的准则,实现了线弹性结构的拓扑优化设计。方法易于实现并改进了传统双向进化结构优化方法中参数较多的缺点。算例表明:基于应力突变率的双向进化结构优化方法可以得到结构合理、边界清晰的拓扑优化构形,并且具有更好的全局寻优能力。
This paper Introduces a bi-directional evolutionary structural optimization （BESO） method based on ratio of stress change. The ratio of stress change in the structures among the material removals is applied as the rule of element addition, Algorithm employs fewer parameters than other BESO methods and can easily evolve to the optimal topology of elastic structures. The example given by this paper shows that the method can obtain clear profile of topology and global optimal solution with higher reliability and efficiency.
出处
《机械设计与研究》
CSCD
北大核心
2008年第2期6-9,18,共5页
Machine Design And Research
关键词
应力突变率
双向进化结构优化
拓扑优化
ratio of stress change
bi-directional evolutionary structural optimization （BESO）
topology optimization
