航空发动机双转子系统的模态分析  

Modal Analysis on Dual-Rotor System of Aero-Engine

作　　者：申苗[1] 唐驾时[1] 李克安[2] 梁翠香[1] 陈勇[3] 隋雪冰 

机构地区：[1]湖南大学力学与航空航天学院,湖南长沙410082 [2]湖南理工学院机械与电气工程系,湖南岳阳414000 [3]沈阳黎明航空发动机(集团)公司,辽宁沈阳110043

出　　处：《兵工自动化》2010年第2期34-36,共3页Ordnance Industry Automation

基　　金：国家自然科学基金资助项目(10672053)

摘　　要：为了更好地了解和掌握发动机固有的振动特性,利用有限元分析ANSYS软件,对某型发动机双转子系统进行了固有频率及振型计算。通过改变轴承的刚度与原计算结果作对比,分析轴承刚度的改变对整个系统动力特性的影响。结合振动力学相关理论,对设计方案进行动力学评价。结果表明,该方法运算速度快,输入参数少,特征值、特征向量求解精度高。In order to understand and predominated the inherent vibration characteristics of the engine better, the natural frequencies and vibration mode shapes of the dual-rotor system of Aero-engine are calculated based on the ANSYS program. Compared with the original calculation, the impact by change of stiffness in bearings on the dynamic properties of the whole system is analyzed. Integrated with the mechanical vibration theory, dynamics evaluations for the design are carried out. The results show that the computing speed of this method is fast and the eigenvalue and the eigenvector can be obtained with high precision and few input parameters.

关 键 词：双转子 有限元方法 模态分析 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程] N945.12[自然科学总论—系统科学]