基于安装过程的O形圈安装结构优化分析

摘要/Abstract

摘要： 基于有限元分析软件ANSYS建立了O形往复密封圈二维轴对称几何模型，预测了实际安装过程中O形圈的静力学特性行为，分析了操作参数和轴端安装结构参数等对密封圈最大von Mises应力和最大平面剪切应力的影响规律，并给出了保证密封圈可靠安装过程的轴端安装结构参数最优值。结果表明，安装过程中，当密封圈与引入角内端圆角接触时，密封圈所受的von Mises应力和平面剪切力最大，且均发生在密封圈内部靠近空气侧处；减小对摩副接触摩擦因数、使引入角内端圆角半径大于3 mm及合理选择引入角角度均有利于降低密封圈安装受损的风险，这与实际工程经验较为符合。

关键词: 安装过程, 有限元方法, 往复密封, O形圈, 静力学特性

Abstract: A two-dimensional axisymmetric geometrical model of reciprocating O-ring seals was established by applying the ANSYS software, which was used to predict the statics sealing behavior of O-rings during actual installation. The influences of operating parameters and installation structure parameters of axial end on the maximum von Mises stress and XY shear stress of the seal were analyzed, and the optimal value of the installation structure parameters of axial end for ensuring the reliable installation processes of the sealing ring was given. The results indicate that during the seal installation, when the sealing ring is in contact with the inner rounded corner of the lead angle, the von Mises stress and the XY shear stress of the sealing ring are the largest, and all occurs at the inside of the seal near the air side. Reducing the contact friction coefficient of friction pair, making the angle of the inner end more than 3 mm and choosing the angle reasonably are beneficial to reduce the risk of damage to the sealing ring installation, which is in good agreement with the actual engineering experience.

Key words: installation process, finite element method, reciprocating seal, O-ring, statics characteristics

中图分类号:

TB42

蔡智媛1;王冰清1;彭旭东1，2;孟祥铠1，2 . 基于安装过程的O形圈安装结构优化分析[J]. 中国机械工程.

CAI Zhiyuan1;WANG Bingqing1;PENG Xudong1,2;MENG Xiangkai1,2. Optimization Analysis of O-ring Installation Structures with Installation Processes[J]. China Mechanical Engineering.

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