基于响应面近似建模方法的换挡电磁阀模型构建

Research on the Approximation Model of Shift Solenoid Multi-field FEM Variation with RSM Method

针对换挡开关电磁阀宽温域工况下可靠性不高的技术问题,以较高精度的多场耦合仿真模型实现参数优化为基础,开展换挡开关电磁阀的结构参数优化研究。构建了换挡电磁阀电磁场-结构场-温度场-流场多场耦合有限元仿真模型,通过电磁力测试、温度测试和流量测试分别校验了电磁场模型、温度场和多场耦合模型精度,满足优化设计所需模型精度要求;为了提高优化效率,基于响应面近似建模(RSM)方法完成了宽温域换挡电磁阀电磁力和应力近似模型构建。结果表明构建的电磁力响应面模型R^2的值为0.987,最大应力响应面模型的R^2值为0.992均大于0.9,近似模型满足设计要求可用于后续换挡电磁阀结构参数优选设计研究。

Aiming at the technical problem that the reliability of the shift switch solenoid valve is not high,the structural parameters of the shift switch solenoid valve are optimized based on the multi-field coupled simulation model. The finite element simulation model of electromagnetic field-structure field-temperature field-flow field multi-field coupling is established. The electromagnetic field model,temperature field and multi-field coupling model are verified by electromagnetic force test,temperature test and flow test respectively. In order to improve the optimization efficiency,the electromagnetic force and stress approximation model of the wide temperature range shift solenoid valve are constructed based on the response surface approximation modeling (RSM) method. The results show that the R^2 value of the electromagnetic response surface model is 0.987,the R^2 value of the maximum stress response surface model is 0.992,and the approximate model satisfies the design requirement. It can be used to optimize the structural parameters of the subsequent shift solenoid valve Design research.