航空发动机叶片弹性边界约束模型振动分析  

Vibration Analysis on Complex Boundaries Model of Aero-engine's Vane

作　　者：李舜酩[1] 柳海龙[2] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]中国运载火箭技术研究院北京航天动力研究所,北京100076

出　　处：《机械设计与研究》2008年第6期60-63,共4页Machine Design And Research

基　　金：国家自然科学基金资助项目(50675099)

摘　　要：在航空发动机叶片振动特性分析的过程中,分析模型边界约束条件的选取对计算结果真实与否至关重要。提出用弹性边界约束条件模型来模拟航空发动机叶片复杂的边界约束状态,给出了固定边界、弹性支撑边界约束条件下叶片振动分析方法。分别用两种不同类型的叶片模型进行了仿真计算,得到了两种边界约束条件下的计算结果。并对不同的计算模型下所得到的计算结果进行了分析比较,得到了一些有参考价值的结论。The choice of boundary conditions for analysis model is very important for whether the computation results meeting the real results in the process of aero-engine＇s vane natural vibration analysis. This paper establishes the models of elasticity boundary conditions for simulating real states of aero-engine＇s vane under the finite element analysis. Some expressions of basic theory on vibration analysis of aero-engine＇s vane are presented under the fixed boundary conditions, and flexible boundary conditions, two types of aero-engine＇s vane are simulated and the computation results of this two types of boundary conditions are gained. The computation results of different models are compared and some valuable conclusions are obtained.

关 键 词：航空发动机叶片 振动分析 边界条件 固有频率 

分 类 号：V231.9[航空宇航科学与技术—航空宇航推进理论与工程]