基于Hyperworks的减速器箱体有限元分析

Finite Element Analysis of Reducer Box Based on Hyperworks

摘要: 针对减速器箱体容易产生刚度不足的问题，综合考虑减速器箱体工作载荷的作用，为减少计算量借助Hyerworks软件首先对减速器箱体进行箱体简化以及几何清理等处理；随后对箱体进行网格划分、建立边界条件、施加载荷等处理并建立减速器箱体有限元模型。本文首先进行箱体模态分析得出减速器箱体的固有模态频率及云图并描述了箱体振型；基于减速器箱体的实际载荷及激励进行静力学分析得出箱体最大位移及应力云图，基于实际运行工况进行了频响分析，得到位移–频率曲线及加速度–频率曲线。找到位移–频率曲线及加速度–频率曲线峰值位移/加速度对应的频率，与固有频率一致的在后续设计时需避免。根据频响分析得到的加速度–频率曲线得出减速器箱体的动刚度。为减速器箱体的结构设计及优化提供了理论依据。

Abstract: In view of the problem that the reducer box is easy to have insufficient stiffness, the effect of the working load of the reducer box is comprehensively considered. In order to reduce the amount of calculation, the reducer box is first simplified and geometrically cleaned with the help of Hyerworks software; then the box is meshed, boundary conditions are established, and loads are applied. In this paper, the natural modal frequency and cloud diagram of the reducer box are obtained by modal analysis of the box, and the vibration mode of the box is described; based on the actual load and excitation of the reducer box, the static analysis is carried out to obtain the maximum dis-placement and stress nephogram of the box. Based on the actual operating conditions, the frequen-cy response analysis is carried out to obtain the displacement frequency curve and acceleration frequency curve. Find the frequency corresponding to the peak displacement/acceleration of the displacement frequency curve and acceleration frequency curve, and avoid those consistent with the natural frequency in the subsequent design. According to the acceleration frequency curve ob-tained from the frequency response analysis, the dynamic stiffness of the reducer box is obtained. It provides a theoretical basis for the structural design and optimization of the reducer box.