中国机械工程2025，Vol.36Issue(9)：1968-1979,12.DOI:10.3969/j.issn.1004-132X.2025.09.008
磁流变液环境下密封副非线性磨损行为研究
Research on Nonlinear Wear Behavior of Sealing Pairs in Magnetorheological Fluid Environment
摘要
Abstract
To investigate the effects of tribodynamics behavior in MRF on the wear mechanism of seal-ing pairs,the dynamic sealing wear model was established considering coupling effects of surface roughness and iron particles,with ANSYS employed for microscopic contact mechanics simulation.Additionally,the friction and wear performance of piston rods with different surface roughnesses in two media was evaluated by self-developed reciprocating dynamic seal wear test device.The results demonstrate that the instanta-neous contact between rough texture and iron particles in sealing interfaces alleviates fatigue cracks on O-ring surfaces under alternating shearing actions of asperities,and help to avoid the micro-cutting effects of iron particles on the surface piston rods.As a result,the sealing pairs exhibit good tribological perfor-mance in MRF environment.However,iron particles situated between polished sample and O-ring are con-tinuously subjected to the transverse shear forces and longitudinal extrusion pressures by micro-texture.Consequently,numerous iron particles are forced to embed in the O-rings,and obvious furrow-like wear marks are produced on the surfaces of reciprocating piston rods,causing premature sealing failure due to the two-body abrasive wear.关键词
磁流变液/表面粗糙度/磨损特性/摩擦动力学行为/磨粒磨损Key words
magnetorheological fluid(MRF)/surface roughness/wear characteristics/tribodynamics behavior/abrasive wear分类
机械制造引用本文复制引用
李姗姗,孙兴伟,杨恒,乔赫廷..磁流变液环境下密封副非线性磨损行为研究[J].中国机械工程,2025,36(9):1968-1979,12.基金项目
国家自然科学基金(52005346,51505298) （52005346,51505298）
辽宁省教育厅青年项目(LJ212410142021) （LJ212410142021）
辽宁省科技厅联合基金(2024MSLH359) （2024MSLH359）
辽宁省教育厅面上项目(JYTMS20231191) （JYTMS20231191）
