摘要
详细分析了一台对旋轴流风机的二级叶轮叶片断裂的事故原因。首先通过用户描述,了解了事故风机概况,并勘察记录了事故叶轮特征。再借助NX软件的有限元静力学分析确定了叶片并非受离心载荷与轴向载荷而断裂。通过观察断裂叶片外观特点和断口宏观特征,再借助有限元响应仿真计算出了叶轮的共振频率点,再结合理论分析最终确定了"共振"是叶片断裂的主要原因。
This of the fracture impeller blade fan. Firstly, paper analyzed the reason accident on a two stage situation about the accident ventilator described by the and record the accident impeller. software of the user, then make a survey characteristics of the Next with the help of NX finite element statics analysis to ultimately determine that the blade was not broken by centrifugal load and axial load, but RESONANCE is the main cause of blade fracture by means of observing the appearance specialty rupture blade characteristics of and macroscopic fracture, once more with the help of finite element response simulation to calculate the resonance frequency of the impeller, combining the theoretical analysis.
出处
《风机技术》
2014年第6期90-96,共7页
Chinese Journal of Turbomachinery
关键词
事故
叶片断裂
共振
有限元分析
对旋轴流风机
UG
NX
accident
rupture of blade
resonance
the finite element analysis
pivot axial flow fan
UG
NX
