液压与气动2025，Vol.49Issue(11)：1-8,8.DOI:10.11832/j.issn.1000-4858.2025.11.001
污染物颗粒物理特性对反冲洗影响研究
Study on Influence of Contaminating Particle Physical Characteristics on Backwashing Effectiveness
摘要
Abstract
In lubricating system filtration,contaminating particles with sizes approaching the filter mesh aperture may exhibit blocking phenomenon.To investigate backwashing characteristics,a geometric model of tightly woven metal wire mesh is constructed,blocking and backwashing processes of contaminating particles with varying materials and shapes are simulated.The thesis analyzes single-particle retention in the filter mesh and pressure-driven dislodgement,evaluating material/shape effects on critical dislodgement pressure.Results demonstrate that identical-shaped particles of different materials generate distinct blocking stresses,equivalent elastic strains,and critical dislodgement pressures,while same-material particles with different shapes exhibit varied mechanical responses.Blocking-induced equivalent elastic strains shows positive correlation with stress,and increases particle hardness elevates filter mesh stress and equivalent elastic strains,which consequently raises required critical dislodgement pressure and intensifies backwashing difficulty.关键词
润滑系统/堵塞/反冲洗特性/临界脱离压力/污染物颗粒Key words
lubricating system/blocking/backwashing characteristics/critical dislodgement pressure/contaminating particles分类
机械工程引用本文复制引用
李嘉雯,陈英龙,龚涛,谢天栋..污染物颗粒物理特性对反冲洗影响研究[J].液压与气动,2025,49(11):1-8,8.基金项目
国家重点研发计划(2021YFC2802403 （）
2024YFC2816400) （）
国家自然科学基金(52275053) （52275053）
