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Multi-material topology optimization of compliant mechanisms using regularized projected gradient approach
Journal of the Brazilian Society of Mechanical Sciences and Engineering ( IF 2.2 ) Pub Date : 2020-08-10 , DOI: 10.1007/s40430-020-02549-2
Pooya Rostami , Javad Marzbanrad

In this article, the identification of optimal topologies for multi-material compliant mechanisms based on the regularized projected gradient approach is presented and analyzed. The monolithic structure of compliant mechanisms makes them suitable to be used in microelectromechanical systems to transfer load and force. The use of additive manufacturing technologies makes it possible to build multi-material structures. However, a proper design optimization approach must be considered to design multi-material mechanisms as well. In this article, the solid isotropic material with a penalization (SIMP) material interpolation scheme is used to parameterize the continuum design domain. The perimeter penalization approach is utilized to remove the checkerboard patterns and scatters in optimal designs. To handle the volume equality constraint, the regularized constraint projection strategy is utilized. Some benchmark problems are considered to analyze the performance of the method.



中文翻译:

使用正则化投影梯度方法的顺应性机制的多材料拓扑优化

在本文中,提出并分析了基于正则化投影梯度方法的多材料顺应性机构的最佳拓扑识别。顺应性机构的整体结构使其适合用于微机电系统中以传递载荷和力。增材制造技术的使用使建造多种材料的结构成为可能。但是,还必须考虑采用适当的设计优化方法来设计多材料机制。在本文中,采用带有罚分(SIMP)材料插值方案的固体各向同性材料来参数化连续体设计域。在优化设计中,周界惩罚方法用于消除棋盘图案和散布。为了处理体积相等约束,利用正则约束投影策略。考虑一些基准问题以分析该方法的性能。

更新日期:2020-08-11
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