中文摘要：

轮毂轴承运行工况复杂,研究其各种工况下的力学特性对轴承设计尤为重要。为此建立第3代轮毂轴承有限元模型,并通过LS-DYNA进行显式动力学分析。假设汽车在平直路面匀速行驶,分析轴承在低速工况下的应力、速度及加速度,并将速度的有限元仿真结果与解析解进行对比验证,进而分析低、中、高速工况下的轮毂轴承动态特性。研究表明：随转速增大,相同时间内应力峰值及出现次数也逐渐增加;高速工况下钢球的加速度比中、低速时小,轮毂轴承振动较小,运转更加平稳。

英文摘要：

Due to complex operation conditions,it is particularly important for bearing design to research mechanical properties for hub bearings under various operation conditions. Thus the finite element model is established for third generation hub bearings,and the explicit dynamic analysis is carried out through LS- DYNA. It is assumed that the car drives on straight road at a uniform speed,the stress,speed and acceleration of bearings are analyzed under low speed.The finite element simulation result of speed is comparatively verified with analytical solution. The dynamic characteristics of hub bearings are analyzed under low,medium and high speed. The research show that the peak stress and occurrence frequency increase with the increase of rotational speed at the same time. The acceleration of steel ball under high speed is slower than medium and low speed,and the vibration of hub bearings is smaller,and the operation is smooth.