航空涡轮轴发动机复杂转子的动力学建模方法  

Dynamics Modeling Method of Complex Rotors for Aero-turboshaft Engines

作　　者：王龙凯 王艾伦 尹伊君[1,2] 金淼 衡星[2] WANG Longkai;WANG Ailun;YIN Yijun;JIN Miao;HENG Xing(Light Alloy Research Institute,Central South University,Changsha,410083;State Key Laboratory of High Performance Complex Manufacturing,Central South University,Changsha,410083)

机构地区：[1]中南大学轻合金研究院,长沙410083 [2]中南大学高性能复杂制造国家重点实验室,长沙410083

出　　处：《中国机械工程》2022年第13期1513-1520,共8页China Mechanical Engineering

基　　金：国家重点基础研究发展计划(973计划)(2013CB035706);国家自然科学基金(51175517);中央高校基本科研业务费专项资金(2019zzts256)。

摘　　要：为建立涡轮轴发动机复杂转子的动力学模型,基于有限元法和分段线性拟合,采用子结构法对复杂结构进行建模,在对系统自由度进行缩减后,推导出转子系统的运动方程。采用理论分析和试验验证了模型的有效性,分析了燃气发生器转子的振动特性。研究结果表明:建立的模型能显著降低整个系统的复杂度,在保证求解精度前提下,可大幅缩短求解时间。To establish the dynamics model of complex rotor systems in turboshaft engines,the complex structure was modeled by substructure method on the basis of finite element method and piecewise linear fitting.After reducing the degrees of freedom of the systems,motion equations of the rotor systems were derived.The validity of the model was verified by theoretical analysis and experiments,and the vibration characteristics of the gas generator rotors were analyzed.The results show that the established model may significantly reduce the complexity of the overall systems and greatly shorten the calculation time under the premise of ensuring the solution accuracy.

关 键 词：涡轮轴发动机 燃气发生器 转子 动力学建模 有限元法 振动特性 

分 类 号：TH113.1[机械工程—机械设计及理论] V231.96[航空宇航科学与技术—航空宇航推进理论与工程]