Three-dimensional Simulation and Prediction of Solenoid Valve Failure Mechanism Based on Finite Element Model

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Li, Jianfeng^1 ; Xiao, Mingqing^1 ; Liang, Yajun^1 ; Tang, Xilang^1 ; Li, Chao^1

College of Aerospace Engineering, Air Force Engineering University, Xian

710038, China^1

关键词: Accelerated life tests;    Automation components;    Electrical resistances;    Kalman filtering algorithms;    Measuring deviation;    Method of finite elements;    Three dimensional finite element analysis;    Three dimensional simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/2/022035/pdf
DOI  :  10.1088/1755-1315/108/2/022035

来源: IOP

【 摘 要 】

The solenoid valve is a kind of basic automation component applied widely. It's significant to analyze and predict its degradation failure mechanism to improve the reliability of solenoid valve and do research on prolonging life. In this paper, a three-dimensional finite element analysis model of solenoid valve is established based on ANSYS Workbench software. A sequential coupling method used to calculate temperature filed and mechanical stress field of solenoid valve is put forward. The simulation result shows the sequential coupling method can calculate and analyze temperature and stress distribution of solenoid valve accurately, which has been verified through the accelerated life test. Kalman filtering algorithm is introduced to the data processing, which can effectively reduce measuring deviation and restore more accurate data information. Based on different driving current, a kind of failure mechanism which can easily cause the degradation of coils is obtained and an optimization design scheme of electro-insulating rubbers is also proposed. The high temperature generated by driving current and the thermal stress resulting from thermal expansion can easily cause the degradation of coil wires, which will decline the electrical resistance of coils and result in the eventual failure of solenoid valve. The method of finite element analysis can be applied to fault diagnosis and prognostic of various solenoid valves and improve the reliability of solenoid valve's health management.