气流激振力作用下旋转冲压转子动力学响应  

Dynamic response of a rotating ramjet rotor under flow induced force

作　　者：刘占生[1] 亢维佳[1] 张广辉[1] 王乐[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《振动与冲击》2013年第3期150-156,共7页Journal of Vibration and Shock

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,通过数值仿真获得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影响。The nonlinear model of flow induced force and the finite element model of a rotating ramjet rotor-hybrid gas bearing system were established on the basis of numerical simulation analysis of compression inlet flow field when the rotating ramjet rotor whirled. The nonlinear dynamic responses of the rotating ramjet rotor-hybrid gas bearing system considering complex flow induced force were obtained with numerical simulation. The results showed that supply pressure of gas bearing and rotor eccentricity have a significant effect on vibration characteristics of a rotor-bearing system under complex flow induced force.

关 键 词：旋转冲压转子 数值仿真 气流激振力 动力学响应 

分 类 号：TK14[动力工程及工程热物理—热能工程]