摘要
推导了齿式联轴器不对中啮合力模型,基于有限元分析建立了考虑齿式联轴器不对中效应的转子系统动力学方程,通过数值仿真研究了不对中啮合力对转子-齿式联轴器系统动力学特性影响规律.理论分析和仿真结果表明:齿式联轴器不对中啮合力与联轴器的结构参数、传递扭矩、静态不对中和动态振动位移等有关;联轴器的刚度并非一个恒定的常数,其与动态振动位移有关,并依赖于静态不对中,在特定不对中状态下,联轴器的主刚度会出现负值.系统动力学特性表现为:齿式联轴器连接的转子系统没有不对中时,系统的响应只有1X倍频;存在不对中时,响应出现2X、3X等整数倍频;不对中量增加时,各频率成分的幅值增加,系统的振动变得复杂.研究结果可以为齿式联轴器连接的转子系统的不对中故障诊断提供依据.
A meshing force model for misaligned gear couplings was derived, and a dynamic system was established based on finite element analysis, while considering the influence of equation of the rotor misaligned gear couplings. Influence rules for meshing force on a rotor-gear coupling system were studied using simulations based on the numerical integral method. Theoretical analysis and simulation results showed： meshing force on gear couplings is related to structural parameters of the coupling, transfer torque, static misalignment, dynamic vibration displacement, etc ; stiffness of the coupling, which is not a constant, relates to dynamic vibration displacement and depends on static misalignment. Dynamic behavior of rotor-gear coupling systems reveals that 1X -rotational speed is the main response of system when there is no misalignment, while 2X, 3X, 4X -rotational speeds appear with some misalignments; moreover, when misalignment increases, the amplitudes of all frequencies become larger, and the vibrations of the system get more complex. These research results can provide important criteria for trouble shooting rotor systems connected by gear couplings.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2009年第1期33-39,共7页
Journal of Harbin Engineering University
基金
国家自然科学基金重点资助项目(10632040)
关键词
齿式联轴器
不对中
啮合力
转子系统
gear coupling
misalignment
meshing force
rotor system
