【摘要】 为研究汽车轮毂承担动态载荷下的性能,以铝合金轮毂为研究对象,基于有限元建模仿真的方法对轮毂结构的固有频率及振型等固有特性进行分析,并通过现场模态试验测试对有限元分析结果进行了验证。此外,对轮毂做进一步静力学仿真分析,在获取轮毂受载状态下应力云图基础上,分析了轮毂的疲劳寿命及最易失效部位,并通过轮毂全寿命周期加速疲劳试验对仿真分析结果进行验证。通过有限元仿真分析结果与实际试验结果的对比,验证了所述建模仿真方法的准确性及可靠性,为研究轮毂固有特性、提高疲劳寿命及结构优化设计提供理论依据。更多还原

【Abstract】 In order to study the performance of automobile wheel hub under dynamic load,aluminum alloy wheel hub taken as the research object, the natural frequency and vibration mode of wheel hub structure were analyzed based on the method of finite element modeling and simulation. The results of finite element analysis were verified by field modal test. In addition, a further static simulation analysis was performed on the hub, and on the basis of obtaining the stress cloud diagram of the hub under load, the fatigue life and the most prone failure position of the hub were analyzed. The simulation results were verified by accelerated fatigue test of the hub life cycle. The accuracy and reliability of the modeling and simulation method are verified by comparing the finite element simulation results with the actual test results, which provides a theoretical basis for studying the inherent characteristics of the hub,the fatigue life and structural optimization design improved.更多还原