摘要
本文用动力学基本理论建立了转子和定子之间有干摩擦的转子系统动态特性分析的数学模型。对该模型的动态特性分析表明 :这类问题的失稳运动在不同条件下可以是正进动 ,也可以是反进动 ;转子转速在临界转速以下时也会发生反进动失稳运动 ;摩擦力在系统未失稳时起推迟发生正进动失稳的作用 ,但是也有扩大反进动失稳转速范围的作用。
On the basis of the basic dynamic theory a mathematical model of rotor systems in which the sliding friction exists between rotor and stator is proposed.It is shown by dynamic analysis of the model that the non_stable motion could be plus or minus vortex motion according to different conditions.The non_stable minus vortex motion may occur when the rotation frequency is below the critical specd.The plus vortex motion may be postponed due to the frictional force when the systems is in stable motion,The extent of the rotation frequency of the non_stable minus vortex motion can be widened due to the frictional force on the other hand.
出处
《振动与冲击》
EI
CSCD
2000年第2期44-45,49,共3页
Journal of Vibration and Shock
基金
湖北省自然科学基金
