摘要
为抑制转子系统碰摩,文中提出了采用惯容器吸振方式来抑制碰摩,以提高转子系统的稳定性。首先,基于达朗贝尔原理建立了串/并联惯容器-转子碰摩故障耦合系统动力学运动方程,而后采用4阶Runge-Kutta法对方程进行数值求解,分析了串/并联惯容器-航空发动机转子系统的碰摩振动特性。结果表明:转子系统附加串联和并联惯容器后其振幅均明显的减小,减幅约为50%;转子系统附加串联惯容器后会出现拍振现象,且拍振强度随着惯容系数和飞轮偏心距的增大而降低;转子系统附加并联惯容器后碰摩故障消失,且无拍振现象出现;惯容系数是影响转子系统动力学特性的敏感参数之一。该研究结果为航空发动机转子系统减振提供了一种行之有效的方法。
In this article,in order to suppress the rotor rubbing,the inerter’s vibration absorbing is applied to suppress the rubbing and improve the rotor system’s stability.Firstly,the dynamic equation of the series/parallel inerter-rotor rubbing fault coupling system’s motion is set up based on the D’Alembert’s Principle;then,the fourth-order Runge-Kutta method is used to solve the equation numerically;the analysis is conducted on the vibration characteristics of the series/parallel inerter-aero engine’s rotor system.It is shown that the amplitude of the rotor system decreases significantly by about 50%after adding the series and parallel inerters.The flapping will occur after the rotor system is attached with the series inerter;the flapping vibration intensity decreases with the ever-growing inerter coefficient and eccentricity of flywheel.After the rotor system is attached with the parallel inerter,the rubbing fault disappears and no flapping vibration occurs.The inerter coefficient is one of the sensitive parameters affecting the rotor system’s dynamic characteristics.These results provide an effective method for vibration reduction of the aero engine’s rotor system.
作者
王彩凤
李宇
刘博
张迎春
胡诗诚
WANG Caifeng;LI Yu;LIU Bo;ZHANG Yingchun;HU Shicheng(School of Aviation Engineering,Jiangsu Aviation Technical College,Zhenjiang 212134;School of Safety Science and Engineering,Civil Aviation University of China,Tianjin 300300)
出处
《机械设计》
CSCD
北大核心
2024年第8期69-81,共13页
Journal of Machine Design
基金
中央高校基金资助项目(2000420637)
校级课题(JATC21010207)。
关键词
航空发动机
惯容器
振动抑制
转子动力学
数值分析
aero engine
inerter
vibration suppression
rotor dynamics
numerical analysis
