多频耦合的航空发动机转子系统动力特性分析  

DYNAMIC PROPERTIES ANALYSIS OF MULTI-FREQUENCIES COUPLED ROTOR SYSTEM IN AIRCRAFT ENGINE

作　　者：韩宝财[1] 唐六丁[1] 邓四二[2,3] 李云龙[1] 

机构地区：[1]河南科技大学工程力学系,河南洛阳471003 [2]河南科技大学机电工程学院,河南洛阳471003 [3]大连理工大学机械工程学院,大连116024

出　　处：《振动与冲击》2008年第8期25-28,共4页Journal of Vibration and Shock

基　　金：国家十一五科技攻关项目(JPPT-115-189)

摘　　要：研究耦合转子系统动力学特性。建立了4个周期激励作用的水平刚性转子—滚动轴承系统的动力学模型,用数值方法得到了系统在不同转速组合、径向游隙和作用力条件下的时域图、频谱图和轴心轨迹图。研究表明:支承轴承径向游隙和径向力对系统动力学特性有明显的影响。Dynamic characteristics of frequency coupled rotor system were analyzed. The model of a horizontal rigid rotor-rolling bearing system under excitation of 4 periodic forces was established. The system equations were numerically integrated. With different speed-combinations, radial internal clearances and radial forces, the time-domain diagram, the spectrum and the shaft center orbit diagram were provided. It is found that the effects of the radial clearance of pedestal bearings and the radial forces are considerable.

关 键 词：多频激励 耦合转子 滚动轴承 非线性动力学 径向游隙 

分 类 号：O347.6[理学—固体力学] O322[理学—力学]