摘要
研究了弹性支承滑动轴承系统的油膜稳定性理论。在建立包含支承阻尼和转子外阻尼在内的弹性支承滑动轴承系统模型的基础上,用非线性方法计算了该系统的油膜失稳振动,讨论了缩小失稳区的方法和具体措施。结果证明,该系统的失稳区宽度和幅度都是有限的;采用较低的无量纲综合系数和适当的无量纲支承阻尼系数和/或较大的无量纲转子外阻尼系数可以缩小失稳区;合理的支承参数将使失稳振动的幅频曲线变为形态上好象共振曲线一样,这样转子将能迅速地越过失稳区。
This paper studies the film stability theory of the sliding bearing system with elastic support. On the basis of establishing the model of the system containing both support damping and rotor external damping, the film unstable vibrations of the system are calculated by the use of nonlinear method, then the methods and the concrete measures of narrowing unstable region are dealt with ,thus proving that the width and the amplitude of the unstable region is limited. The use of lower dimensionless integrated c...
出处
《华南理工大学学报(自然科学版)》
EI
CAS
CSCD
1996年第12期87-93,共7页
Journal of South China University of Technology(Natural Science Edition)
关键词
弹性支承
滑动轴承
油膜稳定性
失稳振动
elastic support
sliding bearing
film stability
unstable vibration