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建立了带挤压油膜阻尼器的盘式拉杆转子动力学模型,利用非线性微分方程多周期解求解方法,对不同系统参数组合下的动力学方程进行求解,研究了带挤压油膜阻尼器的盘式拉杆转子双稳态振动特性的影响规律,比较了带与不带挤压油膜阻尼器系统稳定周期解的动力学特性.通过频谱分析得出:忽略挤压油膜阻尼器时双稳态区主要为基频振动,考虑挤压油膜阻尼器的盘式拉杆转子在双稳态区除了基频振动外,还有倍频的出现.
The dynamics model of disc rod rotor with squeeze film damper was established. By using the method of multi-period solution of nonlinear differential equation, the dynamic equations under different system parameters were solved. The squeeze film damper The dynamic characteristics of the steady-state solution of the system with or without squeeze film damper were compared by analyzing the influence law of the bistable vibration characteristics of the disk-type rod rotor. By spectrum analysis, the bistable zone Mainly for the fundamental frequency vibration, consider the squeeze film damper disk rod rotor in the bistable zone in addition to the fundamental frequency vibration, there are frequency doubling appears.