基于FEM的汽车轮毂轴承动态特性及可靠性研究

Dynamic characteristics and reliability research of hub bearing based on FEM

采用Workbench软件对某型汽车轮毂面对面式双列圆锥滚子轴承进行基于力学仿真分析的动态可靠性研究。首先,简化轴承模型后采用SolidWorks建立其三维模型;然后,采用Workbench对轴承开展模态及谐响应分析,获取轴承空载与满载状态下的位移和等效应力云图,并分别提取空载前10阶与满载前6阶的振型和固有频率等动态性能参数,采用Workbench中的六西格玛分析模块对轴承进行可靠性分析;最后,加载增量载荷谱获取轴承的可靠度和可靠性灵敏度。研究结果与汽车轮毂轴承的实际情况基本吻合。汽车轮毂轴承在不同工况下的仿真及其可靠性研究可以为故障轴承运动学、动力学计算与分析提供一定的参考。

A dynamic reliability study was conducted on a certain type of automobile wheel hub face-to-face double-row tapered roller bearing using Workbench software based on mechanical simulation analysis.Firstly,the simplified bearing model was established and a 3D model was built using SolidWorks.Secondly,modal and harmonic response analysis of the bearing was carried out using Workbench to obtain displacement and equivalent stress cloud maps under both unloaded and loaded conditions,and to extract dynamic performance parameters such as the first 10 orders of the unloaded state and the first 6 orders of the loaded state.Then,the reliability analysis of the bearing was conducted using the 6 Sigma analysis module in Workbench.Finally,the bearing's reliability and sensitivity to reliability were obtained by loading incremental load spectra.The results showed that they were in basic agreement with the actual situation of the automobile wheel hub bearing.The simulation and reliability research of automobile wheel hub bearings under different working conditions can provide a certain basis for the kinematic and dynamic calculation and analysis of faulty bearings.