摘要
通过理论分析与实验研究，讨论带凸肩叶片的振动特性及其干摩擦阻尼效应。提出了适用于凸肩干摩擦的局部非线性特点的一种新的降阶方法，定义了无量纲干摩擦阻尼因子，用于度量干摩擦阻尼效果。最后，按照设计的实验方案，对带凸肩叶片组试件做了振动实验研究。
The vibration characteristics and dry friction damping effect of shrouded blades are studied bV theoretical analysis and experiments.Anew reducing method on the basis of shroud dry friction nonlinear connection element and fixed interfaee component model synthesis meth-ods is proposed.Dimensionless dry friction damping factor is defined to measure the effect of dry friction damping,Finally,according to designed method, a vibration experiment of shrouded blades is carried out.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1994年第11期1306-1314,共9页
Acta Aeronautica et Astronautica Sinica
关键词
非线性振动
干摩擦阻尼
叶片
航空发动机
nonlinear vibration,dry friction damping,orderreducing methods, vibration measurement,blades
