液压与气动2026，Vol.50Issue(3)：30-39,10.DOI:10.11832/j.issn.1000－4858.2026.03.004
考虑间隙热形变的宽温域液压滑阀卡滞模型分析研究
Analysis on Stuck Model of Wide Temperature Range Hydraulic Slide Valve Considering Thermal Deformation of Clearance
摘要
Abstract
The hydraulic operating device of aircraft utilized in alpine areas typically operates within an ambient temperature range of －40℃to 150℃.Under such extreme conditions,the radial clearances of the hydraulic slide valves may be altered,leading to sticking or a delayed response.To address the sticking problem of hydraulic slide valves under a wide temperature range,we establish a mathematical model of thermal deformation of clearance in the hydraulic slide valve and validate the finite element simulation model.The results show that the maximum relative error between the simulation model and the mathematical model does not exceed 0.3%,confirming the rationality and correctness of the thermal deformation model of clearance.Meanwhile,considering machining precision errors,hydraulic oil viscosity and other factors,we establish a mathematical model of sticking force incorporating the thermal deformation of hydraulic slide valve clearance.The study reveals the variation law of sticking force of hydraulic slide valves in different states.Through experimental research,the error between simulation and test results of the hydraulic slide valve is within 2%considering thermal deformation due to clearances,which verifies the accuracy of the sticking force model.关键词
间隙热形变/机械液压卡滞/油液污染卡滞/宽温域Key words
thermal deformation of clearance/mechanical hydraulic sticking/oil contaminant stuck/wide temperature range分类
机械制造引用本文复制引用
熊晨阳,刘东昊,邬恒..考虑间隙热形变的宽温域液压滑阀卡滞模型分析研究[J].液压与气动,2026,50(3):30-39,10.基金项目
国家科技重大专项(J2019-IV-0017-0085) （J2019-IV-0017-0085）
