基于刚-柔耦合模型的高速机车齿轮传动系统断齿故障仿真分析

Modeling and Simulation of Flexible Body Tooth Fracture Fault of Gear Transmission System of High Speed Locomotive

用三维建模软件SOLIDWORKS对DF4B型机车走行部传动系统进行建模,并利用有限元软件ANSYS对故障齿轮进行柔性建模,再将三维模型导入动力学仿真软件ADAMS中,建立刚-柔耦合模型并进行仿真,最后分析了不同测点处的振动仿真结果。结果表明:通过对不同故障齿轮的振动信号进行频谱分析可准确的判断出故障的发生频率及故障的严重程度。通过对同一故障的不同测点进行分析可知振动信号的传递性,从而为状态监测中传感器的布置提供了理论依据。

The 3D model of transmission system is established by using SOLIDWORKS,and the flexible model of the fault gear is established by using ANSYS.Then the 3D model is imported into the dynamic simulation software ADAMS,and the fault gear is changed by the flexible model.After the simulation,the results are imported into Matlab respectively.Results show that,based on spectrum analysis of different fault gear vibration signal,the fault occurrence frequency and severity of failure can be accurately judged.The transitivity of vibration signal can be known through analysis of different points of the same fault,which provides theoretical basis for the arrangement of sensors in condition monitoring.