流体机械2016，Vol.44Issue(9)：41-46,6.DOI:10.3969/j.issn.1005-0329.2016.09.009
离心压缩机叶轮冲蚀磨损的动力特性研究
Dynamic Characteristic Research on Centrifugal Compressor Impeller with Erosion Wear
摘要
Abstract
To study the influence of particle erosion on centrifugal compressor impeller’s dynamic characteristic and structural strength,3D impeller model with damaged blades caused by erosion wear was build.Based on the finite element method,natural frequencies and modal shapes of original impeller and damaged impeller with or no pre-stress were extracted.The resonance of the impeller was studied.The intensity and rigidity changes of blade caused by material loss were analyzed.According to the result, the localize blade thinning due to erosion has no effect on the impeller’s vibration characteristic.At operating speed,the impeller’s resonance margin is small under the 6th and 7th frequencies.Stress concentration and stiffness degradation exist with damaged blade.关键词
离心式压缩机/叶片磨损/模态分析/固有频率/应力Key words
centrifugal compressor/blade wear/modal analysis/natural frequency/stress分类
机械制造引用本文复制引用
徐文汗,李剑峰,刘子武,贾秀杰..离心压缩机叶轮冲蚀磨损的动力特性研究[J].流体机械,2016,44(9):41-46,6.基金项目
国家重点基础研究发展计划（973计划）资助项目 （）
