摘要
为了研究格莱圈的往复密封性能,基于ANSYS Workbench建立格莱圈的有限元模型,并对格莱圈进行往复动态分析,分析压缩率、流体压力和滑环圆角半径对格莱圈最大接触压力和最大Von Mises应力的影响。数值模拟结果表明:在同一压缩率下O形圈与滑环之间的接触压力要大于O形圈与缸体之间的接触压力;随着介质压力的增加,滑环-活塞杆接触对与其余接触对之间的接触压力差值越明显;当滑环空气侧圆角半径小于流体侧圆角半径时,内外冲程所受到的压力差要明显大于空气侧圆角半径大于流体侧圆角半径时的压力差,因此当空气侧圆角半径大于流体侧圆角半径时,可延长格莱圈的使用寿命。
To investigate the reciprocating sealing performance of the Glyd-ring,the finite element model of the Glydring sealing was established based on ANSYS Workbench,and the reciprocating dynamic analysis of the Glyd-ring sealing was carried out.Effects of the compression ratio,the fluid pressures and the slip ring radius on the maximum contact pressure and the maximum Von Mises stress of the Glyd-ring were analyzed.The numerical simulation results show that the contact pressure between the O-ring and the slip ring is greater than that between the O-ring and the cylinder at the same compression ratio.As the fluid pressure increases,the difference of the contact pressure between the slip ring-piston rod contact pairs and the other contact pairs becomes more obvious.When fillet radius of the slip ring at the air side is less than that at the fluid side,the difference of the pressure between the inner and the outer stroke is significantly greater than that when fillet radius at the air side is larger than that at the fluid side.Therefore,when the fillet radius at the air side is larger than that on the fluid side,the life of the Glyd-ring can be prolonged.
作者
刘凤麒
刘晓玲
周江敏
李栋
LIU Fengqi;LIU Xiaoling;ZHOU Jiangmin;LI Dong(School of Mechanical Engineering,Qingdao University of Technology,Qingdao Shandong 266520,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2019年第11期61-66,共6页
Lubrication Engineering
基金
国家自然科学基金项目(51475250)
关键词
格莱圈
往复运动
滑环圆角半径
接触压力
Gldy-ring
reciprocating motion
slip ring radius
contact pressure
