基于刚柔耦合模型的动车组齿轮箱箱体振动特性研究

Research on Vibration Characteristics of EMU Gearbox Body Based on Rigid-Flexible Coupling Model

以国内某型动车组齿轮箱为研究对象,着重研究箱体的振动特性。首先在SolidWorks软件中建立齿轮箱整体结构的三维模型,然后利用ANSYS软件将箱体柔性化,最后在ADAMS软件中建立齿轮系统刚性且箱体柔性的刚柔耦合模型,分析箱体在内部激励下的振动特性。研究结果表明,箱体不同部位的振动特性不同,振动位移较为明显的区域在上箱体顶端和上箱体大齿轮轴承座处,振动速度较为显著的区域在小齿轮轴承座和下箱体大齿轮轴承座处,振动加速度较为突出的区域在小齿轮轴承座和上箱体观察口处。以上研究方法与结论,能够为动车组齿轮箱箱体的结构优化和健康监测提供相应参考。

Taking the domestic EMU gearbox as the research object,this research focuses on the vibration characteristics of the box body.First,a three-dimensional model of the overall structure of the gearbox was built in SolidWorks,then the box body was made flexible using ANSYS.Finally,a rigid-flexible coupling model of the gear system rigid with flexible box body was set up in ADAMS and the vibration characteristics of the box body under internal excitation was analyzed.The research results show that different parts of the box body show different vibration characteristics.The areas where the vibration displacement is more obvious are at the top of the upper case and the big gear bearing seat of the upper case,and the areas where the vibration speed is more prominent are at the small gear bearing housing and the lower case large gear bearing housing,and the areas where the vibration acceleration is more prominent are at the small gear bearing housing and the upper housing observation port.The above research methods and conclusions can provide corresponding reference for the structural optimization and health monitoring of the gearbox of the EMU.