{"title":"Elasto-hydrodynamic analysis of reciprocating piston seals with micro-asperities on cylinder surface","authors":"Zhang Shouyuan","doi":"10.1080/17515831.2020.1730128","DOIUrl":null,"url":null,"abstract":"ABSTRACT The reciprocating piston seals are crucial parts in the hydraulic system, which are widely used in aerospace and military industry. A direct fluid–structure coupling method with high efficiency is proposed for solving the transient elaso-hydrodynamic-lubrication problem in the hydropneumatic suspension reciprocating piston seal system. A detailed three-dimensional fluid–structure coupling model is built using finite element discretization. Material tests are carried out to obtain the parameters of the third-order Ogden constitutive model of the rubber O-ring. The sealing performance and friction force of the sealing system are analysed for different piston speed. The critical speed from mixed lubrication to full-film lubrication is obtained. Three different micro-asperity geometries on cylinder surface are researched for their influence on piston sealing and lubrication performance.","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2020-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/17515831.2020.1730128","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology - Materials, Surfaces & Interfaces","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/17515831.2020.1730128","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
引用次数: 1
Abstract
ABSTRACT The reciprocating piston seals are crucial parts in the hydraulic system, which are widely used in aerospace and military industry. A direct fluid–structure coupling method with high efficiency is proposed for solving the transient elaso-hydrodynamic-lubrication problem in the hydropneumatic suspension reciprocating piston seal system. A detailed three-dimensional fluid–structure coupling model is built using finite element discretization. Material tests are carried out to obtain the parameters of the third-order Ogden constitutive model of the rubber O-ring. The sealing performance and friction force of the sealing system are analysed for different piston speed. The critical speed from mixed lubrication to full-film lubrication is obtained. Three different micro-asperity geometries on cylinder surface are researched for their influence on piston sealing and lubrication performance.