基于三维柔性微动平台拓扑优化方法的研究  

Study on the Topology Optimization Method based on Three-dimensional Full-compliant Micro-platform

作　　者：朱大昌[1] 冯文结 刘运鸿 

机构地区：[1]江西理工大学机电工程学院,江西赣州341000

出　　处：《机械传动》2014年第2期35-38,共4页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(51165009);江西省自然科学基金项目(20114BAB206008);江西理工大学研究生创新基金项目(YC2012-X12)

摘　　要：针对三维全柔顺微动平台进行了结构上的拓扑优化设计,研究了不同体积比下,三维全柔顺微动平台优化的结果。基于三维全柔顺微动平台,运用拓扑优化理论对所设计的全柔顺并联微动平台进行结构上的优化。在全柔顺机构优化过程中刚度和柔度对优化设计同样的重要,因此该拓扑优化设计为多目标的优化设计,采用线性加权法将各个目标函数按一定的加权系数进行线性组合构成新的目标函数。基于MATLAB对设计的柔顺并联微动平台的拓扑优化过程进行仿真。对不同的体积比下优化结果进行了比较,得出当体积比为0.65所得结构为最佳机构,并且与ANSYS分析结果进行对比,得出的结果吻合。Abstract The design of the toplogy optimization for full-compliant micro-platform is carried out. The topology optimization results of three-dimensional full-compliant micro-platform in different volunm ratio are researched. Base on the three-dimensional full-compliant micro-plat- form, by using the topology optimization theory, the structure optimization of full-compliant micro- platform is carried out. Rigidity and flexibility in the process of topology optimization design are equally important,and this topology optimization design is a multi-objective functions optimization design, a new objective function which according to the weigth of individual objevtive functions sums in linear weigthed method is presented. The process of the topology optimization designs for compliant parallel micro-platform is simulated base on MATLAB and the result in different volunm ratio is compared with each other. It presents that the volunm ratio is equal to 0. 65,the structure is the best. It comes to the same result in ANSYS.

关 键 词：拓扑优化 柔顺并联机构 目标函数 体积比 

分 类 号：TH112[机械工程—机械设计及理论]