基于无网格法的反向器拓扑优化设计及性能测试

TOPOLOGY OPTIMIZATION DESIGNING AND PERFORMANCE TESTING OF INVERTER MECHANISMS USING MESHLESS METHOD

为了满足柔性机构的大变形特性,该文将无网格伽辽金法和拓扑优化理论相结合,提出了反向器的拓扑优化设计方法,并对按设计结果加工的机构进行了性能测试。在优化过程中,利用无网格法进行反向器的结构响应分析和敏度分析,从本质上满足了柔性反向器的非线性要求。根据设计结果制造了线性和非线性两种反向器,并对其进行了性能测试,测试结果表明,基于非线性无网格法的优化方法优于基于线性的优化方法。

In order to match the large-displacement character of compliant mechanisms,a nonlinear optimization method for designing inverter mechanisms is presented by combining the theory of the Element-free Galerkin method and topology optimization.The performance of the inverter produced according to the design result is tested.The structural response analysis and sensitivity analysis are carried out by using EFGM,which matches the natural geometrical nonlinear behavior of the inverter mechanisms.According to the topologies designed by linear and nonlinear meshless methods,two kinds of inverters are produced.The load-displacement responses of the inverters are tested.And the result is demonstrated that the non-linear EFGM is better for designing compliant inverter mechanisms than the linear EFGM.