基于两级拓扑优化的振动台扩展台面设计与试验验证

Design of Vibration Expander Uniformity Based on Two-level Topology Optimization and Experimental Verifi cation

根据拓扑优化基本原理,利用OptiStruct进行振动台扩展台面的结构最优化设计,通过两级拓扑优化完成结构的拓扑寻优。首先利用整体级拓扑优化,找到结构的整体最佳构造。然后利用局部级拓扑优化,对局部结构进行拓扑寻优,最终完成产品的结构设计。试验结果与仿真结果对比表明,误差在5%以内,表明方法的有效性和实用性。

Based on the fundamental principles of topology optimization, the optimum design of expander vibration uniformity was finished by two-level topology optimization by using OptiStruct software. Firstly, the whole optimum structure was found by integral topology optimization, then local optimum structure was found by local topology optimization, and the final structure design could be achieved. The comparison of experimental results and simulation results showed that the error existed but was less than 5 %. It proved effectiveness and practicability of the method.