四川大学学报（自然科学版）2025，Vol.62Issue(6)：1413-1424,12.DOI:10.19907/j.0490-6756.240381
航空液压直驱门摆机构X形密封结构分析及优化
Analysis and optimization of the X-shaped seal structure in an aviation hydraulics direct-drive door swing mechanism
摘要
Abstract
To resolve sealing challenges in the hydraulics direct-drive door swing mechanism for aviation,this study focuses on the X-shaped seal structure.A two-dimensional axisymmetric model is developed using ANSYS finite element analysis software to perform finite element analysis.Employing the Box-Behnken re-sponse surface design method along with Design-Expert 13 software,this study examines the variations in maximum Von Mises stress on the primary contact surface of the X-shaped seal under varying conditions.These conditions included the outer and inner fillet radii of the Polytetrafluoroethylene retaining ring,the width of the retaining ring,the gap between the cylinder and U-shaped groove,and fluid pressure.The re-sults indicate that optimal sealing performance is achieved when the outer and inner fillet radii of the Polytetra-fluoroethylene retaining ring are both 0.15 mm,the width of the Polytetrafluoroethylene retaining ring is 0.4 mm,and the gap between the cylinder and U-shaped groove is 0.3 mm,under varying fluid pressure condi-tions.After optimization,at a fluid pressure of 14 MPa,the disparity between the maximum contact stress on the primary sealing surface and fluid pressure increased from 0.297 MPa to 2.027 MPa,meeting practical re-quirements.Additionally,the disparity between the maximum contact stress and fluid pressure was similarly enhanced under different fluid pressure conditions.关键词
X形密封圈/密封性能/试验设计/结构优化Key words
X-shaped seal/Sealing properties/Experimental design/Structure optimization分类
通用工业技术引用本文复制引用
王谢谢,胡晓兵,郭伟东,张继东..航空液压直驱门摆机构X形密封结构分析及优化[J].四川大学学报（自然科学版）,2025,62(6):1413-1424,12.基金项目
校地合作基金(2023CDLZ-SCU) （2023CDLZ-SCU）
四川省科技计划重点研发项目(2022YFG0075) （2022YFG0075）
