反向旋转双转子系统加速响应特性研究  

Acceleration response characteristics of a counter-rotating dual rotor system

作　　者：杨喜关[1] 罗贵火[1] 王飞[1] 唐振寰[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《振动与冲击》2014年第2期105-111,共7页Journal of Vibration and Shock

摘　　要：以五支点双转子系统为研究对象,开展反向旋转双转子系统加速响应特性研究。结合有限元分析软件,利用固定界面模态综合法建立反向旋转双转子试验器的瞬态动力学模型,研究反向旋转双转子系统加速过程中加速时域特性、进动转速变化特性及内外转子盘质心变化规律。研究结果表明,转子各截面加速响应特性与系统各阶临界转速及振型有密切联系;加速过程中存在复杂的非协调进动;内、外转子分别在以各自为主激励的临界转速附近发生质心换向;经试验验证,试验数据与计算结果吻合性较好。The acceleration response characteristics of a five-support counter-rotating dual-rotor system were studied. A transient dynamic model of the experimental counter-rotating dual-rotor system was established with finite element analysis software by using fixed interface modal synthesis method. The acceleration time-domain characteristics, the precession speed variation characteristics and the change laws of centroid of each disk in the rotor system were analyzed during an accelerating process. The study results show that： the acceleration response characteristics of various cross-sections have a close relation with critical speeds and mode shapes of the rotor system; complex nonsynchronous precession exists in the accelerating process; the centroid shifts of inner and outer rotors occur at their incentive critical speed respectively. Experimental verification was carried out, and the calculation results are in good agreement with experiment data.

关 键 词：反向旋转 双转子 模态综合法 瞬态响应 

分 类 号：V231.96[航空宇航科学与技术—航空宇航推进理论与工程]