乘用车轮毂疲劳分析及优化设计

Fatigue Analysis and Optimization Design of Passenger Vehicle Hub

摘要: 针对轮毂结构采用SolidWorks中建立轮毂模型，选取钢制材料轮毂为研究对象，在ANSYS中分别进行弯矩载荷和径向载荷仿真，得到轮毂的静力学结果。基于静力学应力结果通过疲劳分析组件得到轮毂的疲劳寿命云图，再进行模态分析提取出轮毂的前几阶固有频率和振型。为了提高轮毂的性能对在原有基础尺寸进行合理优化，优化结果显示轮毂的质量减少了，符合轻量化设计要求；轮毂的应力应变减少，符合轮毂刚性和强度要求；轮毂的固有频率提升了，减少了结构共振的可能性，符合轮毂的舒适性要求。

Abstract: For the hub structure, the hub model is established in SolidWorks, and the steel hub is selected as the research object. The bending moment load and radial load are simulated in ANSYS, and the static results of the hub are obtained. Based on the static stress results, the fatigue life nephogram of the hub is obtained through the fatigue analysis component, and then the first natural frequen-cies and vibration modes of the hub are extracted through modal analysis. In order to improve the performance of the wheel hub, the original basic dimensions were reasonably optimized, and the optimization results showed that the mass of the wheel hub was reduced, meeting the lightweight design requirements; the stress and strain of the hub are reduced, meeting the requirements of hub rigidity and strength; the natural frequency of the wheel hub is increased, reducing the possi-bility of structural resonance, and meeting the comfort requirements of the wheel hub.