齿轮传动系统齿根裂纹故障的动力学仿真  

Dynamics Simulation of the Tooth Root Crack Fault of Gear Transmission System

作　　者：宁少慧[1,2] 韩振南[1] 李月仙[1] 武学峰[1,2] 

机构地区：[1]太原理工大学机械工程学院,山西太原0300224 [2]太原科技大学机械工程学院,山西太原0300224

出　　处：《机械传动》2015年第10期64-67,共4页Journal of Mechanical Transmission

基　　金：国家自然科学基金(50775157);山西省基础研究项目(2012011012-1)

摘　　要：以直齿圆柱齿轮副的耦合型动力学模型为研究对象,考虑了轮齿的时变啮合刚度及齿间的摩擦后,利用故障轮齿与完好轮齿啮合刚度的不同来实现故障模型的建立。用有限元法计算了无故障和有裂纹故障状态下齿轮的时变啮合刚度,结果表明,裂纹会降低齿轮的啮合刚度,裂纹越大,刚度越小。利用MATLAB求解模型的动力学微分方程组,得出了故障和无故障两种状态下齿轮的角速度和角加速度的仿真曲线,结果是当齿轮转过裂纹处时,从动轮的角速度和角加速度产生了明显的波动,计算结果与故障特征规律相符。Taking the coupling dynamics modeling of spur gear pairs as the research object,considering the time- varying meshing stiffness of teeth and the friction between teeth,two models of different mesh stiffness of fault and intact gear are established. The two models time- varying meshing stiffness are calculated by the finite element method,the results show that the crack will reduce the meshing stiffness of gear,the greater the crack,the smaller the meshing stiffness. By using the Matlab,the dynamics differential equations of the model are solved,the angular velocity and angular acceleration simulation curve of the two kinds of fault and intact gear are got,the result is that the gear turning crack,angular velocity and angular acceleration of the driven produced obvious fluctuations,the calculation results are consistent with theoretical analysis.

关 键 词：齿轮 裂纹 动力学 有限元法 

分 类 号：TH132.41[机械工程—机械制造及自动化]