基于总体耦合矩阵法的滚动联轴器动态特性研究

 根据滚动联轴器啮合数学模型，采用总体耦合矩阵法，建立了多跨度联轴器-转子耦合振动方程，并结合实例数值计算分析了联轴器在不同转矩传动时的动态特性规律。计算结果显示，在低转矩（1 N·m~100 N·m）高速传动时，联轴器的传动稳定性对转矩的大小敏感，振幅变化幅度大，传动性能不佳，但在该范围内，随着转矩的增大，联轴器振幅随之急剧降低，有利于联轴器快速调整到相对稳定的传动状态；而当其在大转矩高速工况下传动时，振幅变化幅度较小，表现良好的传动稳定性，并且随着转矩的增大，幅值变化也逐渐减少，最后趋于稳定，能较好的适应非稳定转矩的重载系统；同时计算结果显示，联轴器左、右半联轴器的节点振幅相互影响很小，能较好的隔离不利振动的传递，有利于多跨度耦合系统的稳定运行。

Dynamic Characteristics Analysis of Rolling Coupling Based on the Method of Whole Coupled Matrix

According to the meshing mathematical model of rolling coupling with the method of whole coupled matrix,the rolling coupling-rotor system coupling vibration equation was established.And combined with examples,the dynamic responses of the rolling coupling under the condition of different torques transmission was calculated to reveals the dynamic rules of the rolling coupling rotating at high-speed.The results show that,when the transmission torque is low(range from 1 N · m to 100 N · m),at high speed rotation,the transmission stability of rolling coupling is sensitive to the torque and the performances of driving is poor.But in this range,the amplitude is decreased sharply while the torque is increasing,which facilitates the coupling quickly adjust to the relative stable transmission state.When the rolling coupling running at high-speed with large torque,the amplitude variation is small and the performances of driving is good.Along with the increase of torque,the amplitude of variation becomes smaller and tends to be stable to the end,which implies that the rolling coupling is sutiable for the system working under heavily and unstablly torque.The reuslts also indicate that the mutual influence of the amplitude of the nodes each on the left-coupling and right-coupling is very small,so the rolling coupling can isolate the adverse vibration transferring between systems,which is in favor of multi-rotor system maitaining stable operation.