摘要
利用集总参数法建立了齿轮动力学模型,并以龙格-库塔数值法求解齿轮的振动响应。使用ANSYS软件建立了无缺陷齿轮组与带齿根裂纹齿轮组模型,分析了两种齿轮组在多种转速下的振动特性。研究表明,齿根处裂纹对齿轮啮合刚度等效弹簧的振动频率影响不明显,且随着齿轮转速增大,带裂纹齿轮组振幅的均方根值略高于无缺陷齿轮组;带裂纹齿轮组在最大振幅附近产生边频现象,且齿轮转速越高边频越明显,此特征可用来判断齿轮组是否存在故障。
The dynamic model of the spur gear pair is built by lumped parameter method and the motion equations are solved by using Rnngc - Kutta method to acquire vibration response of the gear pair. The finite element model of defect - free gear pair and gear pair with root crack are established by ANSYS to analyze the vibration characteristics of the two gear pairs under conditions of different rotating speed. Results show that effects of the root crack on the vibration frequency of the meshing stiffness equivalent spring is not obvious. The RM5 of the amplitude of gear pair with root crack is slightly higher than the defect - free gear pair as the speed increasing. There is side frequency in the vicinity of the maximum amplitude during meshing transmission of the gear pair with root crack, the higher the speed of the gear, the more obvious the side frequency, which can determine whether the gear pair has root crack.
出处
《现代机械》
2016年第6期48-51,共4页
Modern Machinery
基金
陕西教育厅科学研究计划项目(12JK1075)
西京学院教改项目(JGYB1616)
关键词
集总参数法
有限元分析
动态响应
等效弹簧
lumped parameter method, finite element analysis, dynamic response, equivalent spring
