基于三维有限元模型的双转子-支承系统动力学特性研究  

Study on Dynamic Characteristics of Dual Rotor-Supporting System Based on Three-Dimensional FEA Model

作　　者：王国丽[1] 刘树辉[1] 朱清乐[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《北京理工大学学报》2011年第11期1292-1296,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(50875022)

摘　　要：针对航空发动机振动故障率较高的问题,计算分析双转子-支承系统在碰摩-不平衡故障下的轴承支反力并研究其影响因素.建立了双转子-支承系统和高压涡轮-机匣碰摩的三维有限元模型,利用Ansys 12.0计算了双转子-支承系统在碰摩力和不平衡量引起的简谐激振力作用下的轴承支反力.通过计算多种工况下的动态轴承支反力,获得了碰摩和不平衡量的分布及大小对轴承支反力的影响规律.To deal with the issue of aero-engine vibration failure, bearing reactions of dual rotorsupporting system caused by rubbing and unbalance were calculated and analyzed. The three- dimensional FEA models of dual rotor-supporting system and high pressure turbine-casing rubbing model were established. With the functions of Ansys 12.0 and contact analysis, bearing reactions were simulated under the rubbing force and unbalance force. By calculating the bearing reaction results under various conditions, the influence of rubbing and unbalance on the bearing reactions were obtained.

关 键 词：双转子-支承系统 转子动力学 轴承支反力 

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]