非驱动轮毂轴承单元法兰盘轴颈静强度计算及试验

针对轮毂单元静强度计算及试验验证问题,根据第三代非驱动轮毂轴承单元的受力情况,提供了一种用CAE仿真分析方法以外的简便数值分析计算方法,即在车辆受到侧向1.2 g的临界侧向加速度下,将轮毂轴承单元受到的外部径向力和轴向力,通过轮毂轴承单元内部受力分析,转化为轴承内部双列滚道的两个载荷中心的径向力和轴向力;并将轮毂轴承单元法兰盘内侧受力轴颈简化等效为实心悬臂梁的处理方法,来计算法兰盘轴颈静强度;并用侧向静强度试验方法,通过构建适当的试验方案,来验证轮毂轴承单元法兰盘静强度,为设计优化提供简便的分析验证方法。研究结果表明,该简化模型计算结果能够与侧向静强度试验结果保持一致,为笔者利用简化计算方法来简便快速地定量选取轴径和轴颈r角大小提供了可能;该方法计算简便有效,结果可靠。

Calculation and test of spindle shaft neck static strength of non-drive wheel hub bearing unit

Aiming at the wheel hub unit static strength calculation and experiment validation issues, and according to the loading situation of the third generation non-driving wheel hub bearing unit, instead of using CAE simulation analysis method, a simple numerical computation method is provided, namely under 1. 2 g lateral acceleration, the wheel hub bearing unit is forced by external radial force and axial force, through internal force analysis, wheel hub bearing unit is converted into the radial force and axial force of the two internal double raceway load centers, and the wheel hub bearing forced axis neck has been equivalent to solid cantilever beam, to calculate the spindle shaft neck static strength, and with the lateral static strength test method, the appropriate test plan is built to verify the hub bearing unit spindle static strength, an easy validation method is provided for the design optimization. The results indicate that the simplified model calculations can be consistent with the lateral static strength test results, using the simplified calculation method for us to easily select spindle diameter and shaft neck r size, and the method is effective, simple and convenient, calculation result is reliable.