农机化研究2017，Vol.39Issue(5)：37-41,5.
玉米脱粒试验台清选风机线性动力学分析
Linear Dynamic Analysis of the Cleaning Fan for Corn Threshing Machine
摘要
Abstract
In this paper , a new cleaning fan is designed for the corn threshing machine , but the existed fan is twisted during the test .In order to effectively improve the structure , the linear dynamics analysis is carried out by finite element analysis software in this paper .The analysis results show that when the structure of the original fan is running at 800-900 r/min, the inherent frequency and excitation frequency is coupled with each other , so resonance causes damage .The a-nalysis results are consistent with the fault phenomena .By adding support on the middle of the shaft , the fan is im-proved.The fitst natural frequency of shaft assembly increases from 62.3 Hz to 116.3 Hz.The improved model is relia-ble during the follwing test , and the damage phenomenon is not appeared , thus illustrates that the improvement is relia-ble , which provides references for subsequent development of high-performance prototype .关键词
清选风机/线性动力学分析/瞬时模态Key words
cleaning fan/linear dynamic analysis/instantaneous modal分类
农业科技引用本文复制引用
邸志峰,崔中凯,刘虎,张华,卜令昕,周进..玉米脱粒试验台清选风机线性动力学分析[J].农机化研究,2017,39(5):37-41,5.基金项目
“十二五”国家科技支撑计划项目（2013BAD08B01）；山东省农业科学院院地引导科技计划项目（2015YDHZ05）；山东省科技发展计划项目（2014GZX212001）；山东省农机装备研发创新项目 （）
