摘要
本文对带弹性阻尼支承的转子系统由于丢失叶片产生的瞬态响应给出了系统的实验研究结果。进行了不同转速和不同挤压油膜阻尼器 (SFD)油膜间隙情况下转子上施加不同的突加不平衡量的实验。在阻尼器处由极限圆表征的不稳定门限值可以确定 ;全面地观察到转子系统由于非线性引起的一些特殊现象 ,如“锁死”、双稳态跳跃和亚协调进动等。分析了 SFD抑制转子系统不稳定的有效性和能力。
A rotor system with flexible damped support has been investigated experimentally under the conditions of simulated blade loss.Some results of the transient response dynamics are presented.Experiments under different sudden unbalances applied to the rotor system with various Squeeze Film Damper (SFD) film clearances were performed at different rotational speeds.The instability conditions characterized by limiting circle orbits for large amplitude at damper location can be determined,and some particular phenomena caused by nonlinearity of the rotor system such as lock up,bistable jump and subharmonic etc.have been observed.The effectiveness and the capability of SFD for suppressing instability of the rotor system are analyzed.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1992年第2期103-107,共5页
Journal of Aerospace Power
关键词
燃气轮机
转子系统
瞬态响应
试验
Aircraft Engines, Jet and Turbine
Blades
Aircraft Engines, Jet and Turbine
Rotors
Rotors
Testing
