基于ISIGHT平台的斯特封密封结构优化设计

针对某型号液压作动筒中的斯特封密封结构进行了优化设计。首先借助ANSYS有限元软件分析了高压对斯特封密封结构中米塞斯应力分布、接触压力分布及接触宽度的影响,并运用APDL语言对斯特封密封结构进行了参数化建模。然后基于ISIGHT优化软件,对斯特封进行了试验设计,确定了影响唇口处最大接触压力及接触宽度的关键因素,并采用智能优化算法对斯特封滑环进行优化设计。在满足密封要求的前提下,优化后的结构保持接触宽度不变,使得唇口处的最大接触压力下降了17.3%,减小了唇口处的磨损。获得的优化方案为密封结构设计提供了一种新的思路。

Optimization Design of Step Seal-ring Based on ISIGHT Platform

The optimization design of step seal-ring for a certain hydraulic actuator is described. Firstly, the influence of high pressure on the mises stress distribution, contact pressure distribution and contact width in the sealed structure is analyzed by ANSYS, a finite element method software. Meanwhile, the parametric modeling of step seal-ring is established by APDL language. Based on the optimization software ISIGHT, the key factors that influence the contact pressure and contact width of the lip are determined by the experimental design approach. At the same time, the intelligent optimization algorithm is used to optimize the step seal-ring. Under the premise of meeting the sealing requirement, the contact width of the new structure is unchanging and the maximum contact pressure of the new structure decreases by 17.3% compared to that of the original structure, and the wear of the lip is reduced. The optimization scheme provides a new idea for the design of seal structure.