液压与气动2025，Vol.49Issue(5)：64-72,9.DOI:10.11832/j.issn.1000-4858.2025.05.008
基于三维流固耦合模型的往复密封性能特性
Reciprocating Sealing Performance Characteristics Based on a Three-dimensional Fluid-structure Interaction Model
摘要
Abstract
The stretching ratio is a crucial factor affecting the lubrication state of reciprocating seals.Traditional axisymmetric models oversimplify the problem by neglecting the influence of circumferential stretching,leading to insufficient accuracy in handling nonlinear issues.Additionally,the microscopic morphology of the sealing surface affects the fluid flow at the sealing interface.Therefore,a lubrication model incorporating the microscopic morphology of O-rings along with a three-dimensional simulation model is proposed.The study investigates the distribution patterns of macroscopic contact stress and oil film thickness under different stretching ratios.The results indicate that as the stretch ratio increases,the maximum contact pressure during both extension and retraction gradually decreases,while the oil film thickness increases.The simulation results closely match the experimental data,with the calculated friction force deviating from the experimental results by approximately 12.65%.关键词
微观界面/往复密封/润滑/摩擦力Key words
microscopic interface/reciprocating seal/lubrication/friction分类
机械工程引用本文复制引用
张阳,周如林,袁晓明,张宗进,郑泽,辛运锋..基于三维流固耦合模型的往复密封性能特性[J].液压与气动,2025,49(5):64-72,9.基金项目
国家自然科学基金项目(52404168) （52404168）
中国煤炭科工集团科技创新创业资金专项(2023-TD-QN005) （2023-TD-QN005）
北京天玛智控科技股份有限公司科技重点项目(2023-TM-043-J1) （2023-TM-043-J1）
