摘要
针对轴承-转子系统非线性动力学响应的求解问题,基于改进的精细积分法研究了拉杆转子系统的非线性动力学行为。将改进的精细积分法与Wilson-θ法、Newmark法进行比较,结果证明改进的精细积分法的计算结果比Wilson-θ法、Newmark法更接近精确解,求解了拉杆转子系统的非线性动力学响应,并且考虑了拉杆转子圆盘的摆动对转子动力学行为的影响,研究了计算步长对转子系统的非线性动力学行为的影响,结果表明:在非周期运动阶段步长对转子的动力学行为影响较大,在周期运动阶段步长对转子的动力学行为也有一定的影响。
Aiming at solving the nonlinear dynamic responses of bearing - rotor system, the nonlinear dynamic behav- iors of the rod fastening rotor system are studied by the precise integration method. The comparison is implemented be- tween the proposed method, Wilson - 0 method and Newmark method. From the comparison results, the calculation re- sults of the proposed method are in good agreement with the exact value. Then, the nonlinear dynamic responses are solved by the proposed method, and the influence of swing angle of the disk on the dynamics behaviors of the rotor sys- tem is studied. Finally, the influence of calculate step on the nonlinear behaviors of rotor system is analyzed. The re- sults indicated that the calculation step affect the dynamic behaviors of the rotor system significantly when the rotor sys- tem is in the periodic stage, and, when the rotor system is in the periodic stage, the calculation step also affect the dy- namic behaviors of the rotor system.
出处
《轴承》
北大核心
2017年第4期39-47,共9页
Bearing
基金
陕西省渭南市科研计划项目(2016KYJ-1-2)
陕西铁路工程职业技术学院常规项目(KY2016-44)
关键词
滑动轴承
精细积分法
拉杆转子系统
稳定性
分岔
油膜力
sliding bearing
precise integration method
rod fastening rotor system
stability
bifurcation
oil film force
