基于接触碰撞分析的基本理论,采用有限元方法建立了阀芯开启过程的碰撞模型。通过对阀芯与进液阀套的碰撞过程进行仿真分析,得到了碰撞过程中的动态应力变化曲线,确定了产生最大应力的构件和部位,并对其加以优化,得到了阀芯优化的合理结构。 Based on the basic theory of contact and collision analysis, a finite element method was used to establish the collision model of valve core opening process. Through the simulation analysis of the collision process between the valve plug and the inlet valve sleeve, the dynamic stress curve during the collision is obtained, the components and parts that generate the maximum stress are determined and optimized, and the valve core optimization is reasonable structure.