转子叶片裂纹的诊断研究  

Study of diagnosis to rotor crack

作　　者：刘晓波[1] 邹圆刚[1] 邱云阳[1] 

机构地区：[1]江西理工大学机电工程学院

出　　处：《起重运输机械》2008年第8期114-117,共4页Hoisting and Conveying Machinery

基　　金：江西省自然科学基金资助项目(0550029)

摘　　要：采用CAD软件建立了转子叶片的三维实体模型,通过有限元分析软件ANSYS对裂纹叶片进行了动力学分析,结果表明:裂纹的存在导致许多故障特征,例如使强迫振动响应中不仅有激振频率成分,而且存在激振频率的倍频分量,随着裂纹深度的增加,主频所占比例减少,倍频比例增加。这就为转子叶片裂纹故障的监测与诊断提供了依据。3D solid model of rotor blade is built using CAD software, and dynamics analysis of cracked blade is conducted with finite element analysis software ANSYS. It is concluded that crack existence leads to many fault features. For example, vibration response contains not only basic frequency but also multiplication frequency. At the same time, with depth of crack increasing, the proportion of basic frequency reduces, while the proportion of multiplication frequency rises, It provides a basis for rotor blade crack diagnosis and supervision.

关 键 词：转子 动力学分析 叶片裂纹 

分 类 号：TH133[机械工程—机械制造及自动化]