The calculation method for speed of parts of needle roller thrust bearings is derived based on minimum ener-gy loss generated in needle roller -raceway contact during rotating of bearings.In order to research the vibration char-acteristics of bearings,the 3D model is built in ANSYS /LS -DYNA.The simulation analysis is carried out by using ex-plicit dynamics finite element method,and the speed of parts of bearings is obtained.The validity of finite element method is verified when compared with theoretical calculation.The influence of rotating speed and axial load on vibration acceleration of bearings is analyzed through finite element method,and the experimental verifications are carried out.%基于轴承运转时滚针与滚道接触处产生的能量损失最小的假设，推导出推力滚针轴承各零件速度的计算方法。为研究轴承的振动特性，在 ANSYS ／LS －DYNA 中建立三维模型，采用显式动力学有限元法进行仿真分析，得到的轴承各零件的速度与理论值误差很小，同时分析转速、轴向载荷对轴承振动加速度的影响，并进行了试验验证。
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