摘要
某型航空发动机在试验过程中,发生一处重要零件截止阀断裂的现象。为了分析故障产生的原因,以截止阀为研究对象,用Solidworks2016软件创建三维实体模型,导入有限元软件ANSYSWorkbench对其进行模态仿真分析,得到了截止阀的前六阶模态频率,进行了模拟瞬间冲击作用下的响应谱分析,得到X、Y、Z方向等效应力云图。结果表明,在阀本体和法兰盘结合处位置承受Z方向(垂直)应力过大,造成截止阀断裂,找到了冲击故障的原因,证明该结构设计存在问题应予以优化改进。
During the test of a certain type of aero-engine,an important part of the cut-off valve broke.In order to analyze the causes of failure,the cut-off valve as the research object,we created a three-dimensional solid model with Solidworks2016 software,imported the finite element software ANSYS Workbench for modal simulation analysis,obtained the first six modal frequencies of the cut-off valve,and carried out response spectrum analysis under the simulated instantaneous impact.The equivalent stress of X,Y,Z and direction was obtained.The results show that the excessive Z-direction(vertical)stress at the junction of the valve body and flange causes the cut-off valve to break,and the cause of impact failure is found,which proves that there are problems in the design of the structure should be optimized and improved.
作者
孙路
Sun Lu(Shaanxi Institute of Technology,Shaanxi Xi'an 710300)
出处
《内燃机与配件》
2023年第16期77-79,共3页
Internal Combustion Engine & Parts
