阻尼陀螺系统动力响应的有限元复模态分析方法  

Dynamic response of damped gyroscopic system with complex modal method

作　　者：曾亮[1] 李琳[2] 

机构地区：[1]中国民用航空总局航空安全技术中心,北京100028 [2]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《航空动力学报》2008年第10期1847-1853,共7页Journal of Aerospace Power

摘　　要：采用复模态分析方法研究了陀螺系统及具有粘性阻尼的陀螺系统的动力响应及其数值分析方法,提出了陀螺模态阻尼比的概念,实现了利用有限元结构分析软件对诸如薄壁旋转轴和转动薄壁壳体等各类形式的复杂旋转薄壁结构进行动力特性分析的目的,讨论了不同条件(单点旋转简谐激励和沿圆周呈周波型分布的激励)条件下转动薄壁壳体结构的行波振动特点.The dynamic response of damped gyroscopic system was researched by the complex modal method,and the concept of gyroscopic damping ratio was also put forward in this paper. With the method proposed in this paper, it is possible to analyze the dynamic characteristics of rotating thin-walled structures such as the rotating thin-walled sh^ft and shell. The characteristics of traveling wave vibration of shell under different load condition （single-point harmonic load and the harmonic load with k circumferential waves） were also discussed.

关 键 词：复模态 阻尼陀螺系统 动力响应 行波振动 

分 类 号：V214.3[航空宇航科学与技术—航空宇航推进理论与工程]