空心轴偏置盘转子系统横向非线性振动特性研究

发布时间：2018-01-11 02:29

本文关键词：空心轴偏置盘转子系统横向非线性振动特性研究　出处：《机械设计与制造》2017年09期 　论文类型：期刊论文

【摘要】：将能量守恒法、拉格朗日方程、增量谐波平衡法和四阶龙格-库塔法相结合,分析了空心轴偏置盘转子系统的横向非线性振动特性。首先对空心轴偏置盘转子系统进行非线性建模求出总机械能,并用拉格朗日方程建立非线性振动方程。然后,采用增量谐波平衡法对非线性方程进行数值计算,求出幅频特性曲线,并用四阶龙格-库塔法进行积分计算。最后,分析了不同参数对偏置盘转子系统非线性振动的影响。结果表明:外阻尼系数、偏心质量与偏心半径乘积仅影响非线性振幅大小;空心轴内径,盘在轴的位置除了影响非线性振幅大小外,还会影响非线性振动的频率。
[Abstract]:The energy conservation method, Lagrangian equation, incremental harmonic balance method and fourth order Runge-Kutta method are combined. The lateral nonlinear vibration characteristics of the hollow shaft offset disk rotor system are analyzed. Firstly, the total mechanical energy of the hollow shaft offset disk rotor system is obtained by nonlinear modeling. The nonlinear vibration equation is established by Lagrange equation, and the amplitude and frequency characteristic curve is obtained by using the incremental harmonic balance method. The fourth order Runge-Kutta method is used to calculate the integral. Finally, the influence of different parameters on the nonlinear vibration of the offset disk rotation subsystem is analyzed. The results show that the external damping coefficient is obtained. The product of eccentricity mass and eccentric radius only affects the nonlinear amplitude. The inner diameter of the hollow axis and the position of the disk in the shaft not only affect the amplitude of nonlinear vibration, but also affect the frequency of nonlinear vibration.
【作者单位】：山东科技大学机械电子工程学院;
【基金】：国家自然科学基金(11672166)
【分类号】：TH113.1
【正文快照】： 1引言产生的横向非线性振动。这是因为当转速提高到一定程度时,转旋转机械主要依靠旋转动作完成特定功能的机械,传统的旋子剧烈的横向非线性振动将会严重影响设备的稳定性,甚至破坏转机械普遍采用实心轴实现能量的传递。实心轴存在扭矩小、固设备造成灾难。有频率低等局限性。

【相似文献】