基于OptiStruct的折弯机器人Y轴轴身的形状优化

摘要

To improve the stiffness of bending robot' s Y-axis, this paper analyzes the static stiffness in two directions and lower vi-brant model and natural frequency in the most dangerous working condition. OptiStruct is used with responses of mass, statistic dis-placement, compliance index and lower frequency to perform the topology optimization of the diaphragm plates and to find out distri-bution of the diaphragm plates ' material and the grid deformation technique is applied to the shape optimization of Y-axis. The re-sults show that the static stiffness and lower frequency are obviously improved.%为提高某折弯机器人Y轴的刚度,分析了轴身最危险工况2个方向的静态弯曲刚度与低阶模态振型及频率.利用OptiStruct软件,以质量、静态作用下的位移、模态分析的低阶频率以及组合柔度指数作为响应,对横隔板进行拓扑优化,得到横隔板的材料分布.利用网格变形技术对Y轴轴身的外形进行形状优化.结果显示静态刚度和模态分析的低阶频率都明显提高.