Dynamic Characteristic Analysis and Experiment for Integral Impeller Based on Cyclic Symmetry Analysis Method  

作　　者：WU Qiong ZHANG Yidu ZHANG Hongwei 

机构地区：[1]State Key Laboratory of Virtual Reality Technology and Systems,School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China

出　　处：《Chinese Journal of Aeronautics》2012年第5期804-810,共7页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China (51105025);Open Funding Project of State Key Laboratory of Virtual Reality Technology and Systems of Beihang University (BUAA-VR-12KF-10)

摘　　要：A cyclic symmetry analysis method is proposed for analyzing the dynamic characteristic problems of thin walled integral im- peller. Reliability and feasibility of the present method are investigated by means of simulation and experiment. The fundamental cyclic symmetry equations and the solutions of these equations are derived for the cyclic symmetry structure. The computational efficiency analysis between whole and part is performed. Comparison of results obtained by the finite element analysis （FEA） and experiment shows that the local dynamic characteristic of integral impeller has consistency with the single cyclic symmetry blade. When the integral impeller is constrained and the thin walled blade becomes a concerned object in analysis, the dynamic characteristic of integral impeller can be replaced by the cyclic symmetry blade approximately. Hence, a cyclic symmetry analy- sis method is effectively used to improve efficiency and obtain more information of parameters for dynamic characteristic of integral impellers.A cyclic symmetry analysis method is proposed for analyzing the dynamic characteristic problems of thin walled integral im- peller. Reliability and feasibility of the present method are investigated by means of simulation and experiment. The fundamental cyclic symmetry equations and the solutions of these equations are derived for the cyclic symmetry structure. The computational efficiency analysis between whole and part is performed. Comparison of results obtained by the finite element analysis （FEA） and experiment shows that the local dynamic characteristic of integral impeller has consistency with the single cyclic symmetry blade. When the integral impeller is constrained and the thin walled blade becomes a concerned object in analysis, the dynamic characteristic of integral impeller can be replaced by the cyclic symmetry blade approximately. Hence, a cyclic symmetry analy- sis method is effectively used to improve efficiency and obtain more information of parameters for dynamic characteristic of integral impellers.

关 键 词：dynamic characteristic cyclic symmetry IMPELLERS SIMULATION finite element analysis BLADE 

分 类 号：O327[理学—一般力学与力学基础] TP273[理学—力学]