转子扭转-纵向耦合振动分析  

ANALYSIS OF COUPLED TORSIONAL-AXIAL VIBRATION OF A ROTOR

作　　者：姚学诗[1] 郑春龙[1] 

机构地区：[1]韶关学院物理与机电工程学院,广东韶关512022

出　　处：《力学与实践》2010年第3期89-91,共3页Mechanics in Engineering

摘　　要：针对某转子的模型,分析了扭转-纵向耦合振动.计算结果表明:设置转子预应力与旋转时的离心力相对应,其扭转振动频率将随预应力的增大而增大.转子纵向振动频率不受该预应力的影响,这是因为转子旋转时预应力的方向与轴线垂直.随着转子旋转时预应力的变化,扭转振动频率接近纵向振动频率,出现扭转-纵向耦合振动.Based on a rotor model,the coupled torsional-axial vibration is analyzed.Calculation results show that the prestress and the rotational centrifugal load may influence the torsional vibration frequency of a rotor. The torsional vibration frequency will increase when the prestress is increased.The axial vibration frequency is not influenced because the direction of the prestress is perpendicular to the axis.The coupled torsional-axial vibration may take place when the torsional vibration frequency is increased due to the prestress.

关 键 词：预应力 温度应力 扭转-纵向耦合振动 

分 类 号：TH113.1[机械工程—机械设计及理论]