超高压组合缸体自增强工艺的有限元模拟与对比研究

以某设备的超高压组合缸体为研究对象,建立组合缸体模型。首先对传统组合缸体进行有限元分析,然后对外形相同的超高压组合缸体的两种自增强工艺进行有限元模拟和对比研究。研究表明:套装后再自增强处理在降低内缸内壁应力峰值上明显优于首先对内缸进行自增强处理。虽然套装后自增强压力超过1000 MPa,但首先对内缸自增强影响过盈套装,所以在压力源允许的情况下推荐套装后再进行自增强处理。该研究可为超高压组合缸体自增强工艺的选择和优化提供参考。

Finite Element Simulation and Comparative Study on Self-reinforced Technology of Multilayer Ultrahigh Pressure Cylinder

Taking the multilayer ultrahigh pressure cylinder of a certain equipment as the research object, we establish a cylinder model. Firstly, the traditional multilayer ultrahigh pressure cylinder is analyzed by the finite element method, and then two kinds of self-reinforced technologies of the same shape multilayer ultrahigh pressure cylinder are simulated and compared. The results show that the self-reinforcement after the suit is obviously better than the self-reinforced inner cylinder in reducing the stress peak of the inner wall of inner cylinder. Although the self-reinforced pressure exceeds 1000 MPa after the combination, the self-reinforcement of the inner cylinder will affect the interference set first. Therefore, if the pressure source allows, the cylinder is first packaged and then self-reinforced. This study can provide references for selection and optimization of multilayer ultrahigh pressure cylinder self-reinforced technology.