反向旋转双转子系统非线性分析  

Nonlinear dynamic performance analysis of counter-rotating dual-rotor system

作　　者：罗贵火[1] 胡绚[1] 杨喜关[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《振动工程学报》2009年第3期268-273,共6页Journal of Vibration Engineering

摘　　要：以双转子系统中介轴承刚度的非线性为简化模型,推导了反向旋转双转子系统振动响应的非线性动力学方程。研究了转子转速、不平衡量和中介轴承径向间隙对系统响应特性的影响。结果表明:转速、不平衡量等对转子-轴承系统的非线性振动有较大的影响;减少中介轴承的径向间隙,有利于系统的非周期运动转变为周期运动,提高系统运动的平稳性。The dynamical equation for the nonlinear vibration of the counter-rotating dual-rotor systems is deduced, basing on the simplified model of non-linear stiffness of inter-shaft bearings. The influences of the rotor speeds, the amount of unbalance, and the radial clearance of inter-shaft bearings to the system response characteristics are studied. The results indicate that the nonlinear vibration can be reduced by selecting the parameters, including the rotor speed and the amount of unbalance and the non-periodic vibration can be avoided by decreasing the radial clearance of inter-shaft bearings.

关 键 词：反向旋转 双转子系统 中介轴承 动力学特性 非线性振动 

分 类 号：V233[航空宇航科学与技术—航空宇航推进理论与工程]