基于超单元法的无铰式旋翼桨毂动力学等效参数计算方法  

The Calculation Method of Equivalent Dynamic Parameters of Bearingless Rotor Hub based on Super-element Method

作　　者：邱志祥 喻国瑞 王伟特 QIU Zhixiang;YU Guorui;WANG Weite(China Helicopter Research and Development Institute,Jingdezhen 3333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2023年第2期1-4,10,共5页Helicopter Technique

摘　　要：以梁模型为基础的旋翼动力学分析中,需输入桨叶剖面特性、桨毂剖面特性和操纵线系刚度等参数。无铰式旋翼动力学特性对桨毂剖面特性较为敏感,简单的面积分方法在计算桨毂剖面刚度时误差较大。基于超单元理论,利用三维有限元对桨毂进行静力缩聚,得到适用于梁模型旋翼气弹分析的等效桨毂动力学参数。旋翼旋转动特性试验结果表明,该等效方法计算准确。The rotor dynamic analysis,based on beam model,needs the input information of section properties of blade and hub,and the stiffness of control system.The dynamic properties of bearingless rotor are sensitive to the stiffness of hub,while the traditional way of calculating stiffness by surface integral has unacceptable error.This paper introduced a way to calculate the equivalent dynamic parameters of hub,based on super-element and static condensation through 3D FEM.The results fit well with rotor rotating dynamic characteristics test.

关 键 词：超单元 无铰式旋翼桨毂 动力学等效 

分 类 号：V214.3[航空宇航科学与技术—航空宇航推进理论与工程]