滚动轴承外圈局部故障的动态特性及计算机仿真

Dynamic Characteristics for the Part Fault of Outer Race in a BallBearing and Computer Simulation

运用运动学和动力学等理论知识,建立了局部故障滚动轴承系统的振动模型,模型综合考虑轴承径向游隙、载荷分布、几何尺寸、故障脉冲序列、故障点位置等因素对振动特性的影响,以6207轴承外圈局部故障为例,借助计算机仿真技术在Simulink环境下对模型进行动态仿真,仿真结果清晰的表达了故障轴承的振动特性,验证了模型的正确性,为今后滚动轴承的故障诊断与监测提供了理论基础和现实依据.

A physics model is set to deal with a single point defect of a rolling bearing by a method of kinematics and dynamics under constant radial load. The model incorporates the diametral clearance, load distribution, the effect of bearing geometry, impulses train by the fault, fault styles to the characteristics of vibration. Using computer simulation presents the dynamic curves with the example of 6207 bearing, which provides theoretical and practical basis for the coming fault diagnosis of rolling bearing.