摆动油缸端面密封圈不同轴向预压缩量下接触压力分析  

Contact Pressure Analysis of the End-face Seal of Rotary Vane Actuator at Different Axial Precompression

作　　者：黄海祺 谢良喜[1] HUANG Haiqi;XIE Liangxi(College of Machinery and Automation,Wuhan University of Science and Technology,Wuhan Hubei 430081,China)

机构地区：[1]武汉科技大学机械自动化学院,湖北武汉430081

出　　处：《润滑与密封》2021年第3期57-62,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(51375352)。

摘　　要：对叶片式液压摆动油缸端面密封圈在不同轴向预压缩量下的接触压力展开研究,分析其受力情况及对摆动油缸启动压力的影响。利用弹性力学相关公式对端面密封圈进行受力分析,计算出不同轴向预压缩量产生的接触压力;利用Abaqus有限元仿真分析软件对聚氨酯材料制成的端面密封圈进行仿真分析,模拟在不同轴向预压量下的应变应力情况,找出最大应变和最大应力位置;对不同轴向预压缩量下的摆动油缸启动压力进行计算;结合实际可加工的尺寸进行实验,验证理论分析的准确性。结果表明:端面密封圈的最大应变与应力均分布在外圆环与内圆环密封接触处;当端面密封圈轴向预压缩量增大,其对应摆动油缸的启动压力也增大,且两者的关系为非线性相关。The contact pressure of the end-face seal of hydraulic rotary vane actuator(RVA)under different axial precompression was studied,and the stress and the influence of stress on the starting pressure of the RVA were analyzed.The mechanical analysis of the end-face seal was performed using the elastic mechanics related formula,and the contact pressure generated by different axial precompression was calculated.Abaqus finite element simulation analysis software was used to simulate and analyze the end-face seal made of polyurethane material,the strain and stress situation under different axial precompression was simulated,and the maximum strain and maximum stress location was found.The starting pressure of the RVA under different axial precompression was calculated,and the experiment was carried out to verify the accuracy of the theoretical analysis.The results show that the maximum strain and stress of the end-face seal are distributed in the contact between the outer ring and the inner ring.When the axial precompression of the end-face increases,the corresponding starting pressure of the RVA also increases,and the relationship between the two is nonlinear.

关 键 词：叶片式液压摆动油缸 端面密封圈 轴向预压缩量 启动压力 

分 类 号：TH137.5[机械工程—机械制造及自动化]