气流激振力作用下的旋转冲压转子动力学响应

PDF(2990 KB)

振动与冲击 ›› 2013, Vol. 32 ›› Issue (3) : 150-156.

论文

气流激振力作用下的旋转冲压转子动力学响应

刘占生亢维佳张广辉王乐

作者信息 +

The dynamic response of rotating ramjet rotor under flow induced force

LIU Zhan-sheng, KANG Wei-jia, ZHANG Guang-hui, WANG Le

Author information +

文章历史 +

摘要

对旋转冲压发动机转子涡动时压缩进气道的内部流场进行数值仿真，建立了作用在转子上的气流激振力非线性模型，结合旋转冲压转子-动静压混合气体轴承系统的有限元模型，并通过数值仿真获得了复杂气流激振力作用下旋转冲压转子-动静混合气体轴承系统的非线性动力学响应。研究结果表明,旋转冲压转子的偏心距对复杂气流激振力作用下转子轴承系统的振动特性具有显著的影响。

Abstract

The nonlinear model of flow induced force and finite element model of the rotating ramjet rotor- hybrid gas bearings system have been established on the basis of numerical simulation analysis of compression inlet flow field when rotating ramjet rotor whirls. The nonlinear dynamic response of the rotating ramjet rotor- hybrid gas bearings system with consideration of complex flow induced force are obtained by numerical simulation. The results show that supply pressure of gas bearing and rotor eccentricity have significant effect for vibration characteristics of the rotor-bearing system under complex flow induced force.

导出引用

刘占生亢维佳张广辉王乐. 气流激振力作用下的旋转冲压转子动力学响应[J]. 振动与冲击, 2013, 32(3): 150-156

LIU Zhan-sheng;KANG Wei-jia;ZHANG Guang-hui;WANG Le. The dynamic response of rotating ramjet rotor under flow induced force[J]. Journal of Vibration and Shock, 2013, 32(3): 150-156