表面微织构的数学模型及其弹流润滑性能研究

《表面微织构的数学模型及其弹流润滑性能研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、万方数据英文摘要ABSTRACTIt’Sknownthatmicro-texturedsurfacecanimprovethetribologicalpropertiesoffrictionsurfaces．Soforasystematicandcomprehensivestudyofthemicro．texturedsurfaceEHLperformanceandreducingfrictionmechanism，thispaperestablishesthemathematicalmodelofdotted，linearandmeshsurfacemicro．te

2、xturetoexplorethelawoffrictioncoefficient’Svariationwithmicro-texturedsurfacetopographyparameters．Micro-texturedsurfacetopographyparametersconsistofthedepth，areaoccupancyanddistributedmannerofmicro．texturedsurface．BasedonEHLtheory，Reynoldequation，filmthicknessequation，loadbalanceequatio

3、n，viscosity-pressureequationanddensityequation，theEHLmathematicalmodelofthreekindsofmicro-texturedsurfacesareestablished．Andnextmultigridmethodisusedtosolvethemodel．Finallythefrictioncoefficient，pressureandfilmthicknessdistributionofthreekindsofmicro．texturedsurfaceareobtained．Tosumup,b

4、yanalyzingtheconclusionisasfollows：Formicro—texturedsurfaceofdottedtexture，it’Sfoundthatthefrictioncoefjficientdecreasesfirstandthenincreasesalongwithmicro．pitdepth，areaoccupancyandthenumberofrowsincreasing．Andthecoefficientoffrictionistheminimum、Vhenthemicro‘pitdepthis21am，theareaoccup

5、ancyrateis18％，andtherankednumberis7．Meanwhile，thefrictioncoefficientissmallerwhenmicro．pitsweredistributedatanobtuseanglethanthatwithfightangleandacutetype．Formicro-texturedsurfaceoflineartexture，it’Sfoundthatthefrictioncoefficientdecreasesfirstandthenincreasesalongwithmicro·groovedepth

6、，areaoccupancyandthenumberofrowsincreasing．Andthecoefficientoffrictionreachestheminimumwhenthemicro‘groovedepthis69m，theareaoccupancyrateis40％，andtherankednumberis5．Meantime，thefrictioncoefficientissmallerwhentheanglebetweenmicro-grooveandtheslidingdirectionwas150。thanthatwithotherangle

7、s．Formicro-texturedsurfaceofmeshtexture，it’Sfoundthatthefrictioncoefficientdecreasesfirstandthenincreasesalongwithmicro-groovedepth，areaoccupancyandthenumberofrOWSincreasing．Andthecoefficientoffrictionreachestheminimum万方数据英文摘要whenthemicro-groovedepthis4Ⅲ[Il，theareaoccupancyrate