基于伺服液压缸X形密封圈的数值模拟  

Numerical Simulation Based on X-ring Seals of Servo Hydraulic Cylinders

作　　者：朱俊 傅连东[1,2] 湛从昌 ZHU Jun;FU Lian-dong;ZHAN Cong-chang(Key Laboratory of Metallurgical Equipment ant Its Control of Wuhan University of Science and Technology,Ministry of Education,Wuhan 430081,China;School of Mechanical Automation,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学机械自动化学院,湖北武汉430081

出　　处：《液压气动与密封》2024年第1期16-20,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(51475338)。

摘　　要：针对伺服液压系统中的执行元件伺服液压缸活塞中的X形密封圈,采用有限元分析软件ANSYS建立其二维轴对称有限元模型,研究X形密封圈在沟槽圆弧半径、流体压力、初始压缩率不同参数的条件下,对Von Mises应力、主接触面最大接触压力大小的影响。结果表明:内行程时沟槽圆弧半径为2.6 mm时密封性能最佳,外行程时沟槽圆弧半径为2.2 mm时密封性能最佳;X形密封圈在流体压力为10~20 MPa的范围内密封性能逐渐变差;初始压缩率为5%~15%时密封性能逐渐变好。For the X-ring in the piston of the servo hydraulic cylinder,the executive element in the servo hydraulic system,the finite element analysis software ANSYS was used to establish its two-dimensional axisymmetric finite element model to study the influence of the X-ring seal on the Von Mises stress and the maximum contact pressure of the main contact surface under the conditions of different parameters of groove arc radius,fluid pressure and initial compression ratio.The results show that the sealing performance is best when the groove arc radius is 2.6 mm during the internal stroke,and the best sealing performance when the groove arc radius is 2.2 mm when the outer stroke,and the sealing performance of the X-shaped sealing ring gradually deteriorates in the range of fluid pressure of 10~20 MPa.When the initial compression ratio is 5%~15%,the sealing performance gradually becomes better.

关 键 词：伺服液压缸 X形密封圈 数值模拟 ANSYS有限元分析 

分 类 号：TH137[机械工程—机械制造及自动化] TB42[一般工业技术]