等效静态载荷法对高速轻载机构的影响因素研究

Influence Factors of Equivalent Static Loads Method for High-Speed Low-Load Mechanism

等效静态载荷法(Equivalent Static Loads Method,ESLM)是一种能够解决大多数非线性动力学系统动态响应优化问题的有效方法。针对ESLM应用在高速轻载机构优化上的不足,以焊头摆杆机构拓扑优化为例,研究ESLM内循环迭代次数和体积分数约束这两个因素对优化结果的影响情况。测试结果表明:ESLM内循环迭代次数和体积分数约束是影响高速轻载机构优化的两个重要因素。为提高优化结果,使高速轻载机构获得更好的动力学性能,应该限制ESLM的内循环迭代次数,并通过试验对比来确定最优的体积分数约束。

Equivalent static loads method（ESLM）is an effective method to solve the dynamic response optimization of most nonlinear dynamic systems.In light of the disadvantages of applying ESLM to optimization of high-speed low-load mechanism,two influence factors are studied by performing a topology optimization of a bonder arm.One is the inner iteration number of ESLM and the other is the volume fraction for the constraint.Experiment results show that both of them are the factors which have an important influence on the optimization result of high-speed low-load mechanism.To improve the optimization result and make the mechanism achieve a better dynamic performance,the inner iteration number of ESLM should be limited and the best volume fraction for the constraint should be determined by experiment comparison.