对旋轴流式局部通风机叶轮的模态分析  

Modal Analysis for Impeller of Contra-rotating Axial Local Fan

作　　者：贺秋冬[1] 李丽君[2] 李坤 

机构地区：[1]湖北工程学院计算机与信息科学学院,湖北孝感432000 [2]湖北工程学院外国语学院,湖北孝感432000 [3]湖北赛福机械有限公司,湖北孝感432000

出　　处：《煤矿机械》2012年第9期120-121,共2页Coal Mine Machinery

基　　金：湖北省教育厅科学技术研究计划项目(B20122602)

摘　　要：以FBDC№9.0/2×30矿用防爆抽出式对旋轴流局部通风机(叶轮直径0.9 m,2级,单级功率30 kW)为研究对象,按照一定的简化原则,利用有限元分析软件─ANSYS对其叶轮建立了接近实际的三维有限元计算模型,经过模态分析,确定了叶轮的振动特性,得出了叶轮的前6阶固有频率和模态振型,结果表明该叶轮不存在共振现象。样机试验及用户的实际使用证实,叶轮的计算模型正确,分析结果可靠。计算和分析方法为轴流局部通风机叶轮的设计与进一步的动力学分析和研究提供了参考。Taking extractable explosion-proof contra-rotating axial fan for mine local ventilator FBDC No9.0/2×30 （impeller diameter：0.9 m,2 stages, single stage power：30 kW） as the research object, according to a certain simplification principle, an approximate three-dimensional finite element computation model on the impeller is built by using ANSYS software. By modal analysis, the vibration features of impeller were determined, and the natural frequency and mode shape of the top 6 ranks were obtained.The results show that the resonance of the impeller would not occur. Sample test and users＇ application verifies that the calculation model of the impeller is right, and that the result of analysis is reliable. The calculation and analysis method have reference significance to the impeller design and further dynamics analysis of contra-rotating axial local fan.

关 键 词：有限元 叶轮 局部通风机 模态分析 振型 固有频率 

分 类 号：TD441.2[矿业工程—矿山机电]