摘要
在传统齿轮传动轴系扭转振动计算中,将齿轮副简化为单一惯量而忽略齿轮啮合动态激励,会导致轴系扭转振动特性分析的结果不能正确描述轴系实际工作状态.本文以齿轮传动轴系为对象,考虑齿轮啮合的动态特性,建立轴系扭转振动当量模型.对齿轮啮合时变刚度和啮合激励力进行Matlab数值模拟.将Newmark逐步积分法应用于轴系扭转振动强迫振动响应的计算中,计算在齿轮啮合动态激励扭矩和外加负载扭矩的分别作用和共同作用下的轴系扭转振动响应情况,比较分析结果,说明了齿轮啮合动态特性是轴系扭转振动的重要激励源而不可忽视这一事实.
tem with Taking a gear-driving shaft system as the object in this paper, an equivalent model of the target sys- shafting torsional vibration is developed. At first, the free vibration analysis is studied to obtain the nat- ural frequencies of the torsional vibration, Then, the gear variable stiffness and the gear dynamic excitation are simulated by the software Matlab. Moreover, the Newmark Step Integration Method is applied to calculate the forced vibration response of the shaft torsional vibration under gear dynamic excitation or extra-applied load torque or both. It is concluded from the comparison of the results that gear dynamic excitation cannot be neglected in the shafting torsional vibration.
出处
《动力学与控制学报》
2016年第5期454-462,共9页
Journal of Dynamics and Control
基金
国家自然科学基金资助项目(51375104)~~
