表面微织构的数学模型及其弹流润滑性能-研究

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

2、ted，linearandmeshsurfacemicro．texturetoexplorethelawoffrictioncoefficient’Svariationwithmicro-texturedsurfacetopographyparameters．Micro-texturedsurfacetopographyparametersconsistofthedepth，areaoccupancyanddistributedmannerofmicro．texturedsurface．BasedonEH

3、Ltheory，Reynoldequation，filmthicknessequation，loadbalanceequation，viscosity-pressureequationanddensityequation，theEHLmathematicalmodelofthreekindsofmicro-texturedsurfacesareestablished．Andnextmultigridmethodisusedtosolvethemodel．Finallythefrictioncoeffici

4、ent，pressureandfilmthicknessdistributionofthreekindsofmicro．texturedsurfaceareobtained．Tosumup,byanalyzingtheconclusionisasfollows：Formicro—texturedsurfaceofdottedtexture，it’Sfoundthatthefrictioncoefjficientdecreasesfirstandthenincreasesalongwithmicro．pit

5、depth，areaoccupancyandthenumberofrowsincreasing．Andthecoefficientoffrictionistheminimum、Vhenthemicro‘pitdepthis21am，theareaoccupancyrateis18％，andtherankednumberis7．Meanwhile，thefrictioncoefficientissmallerwhenmicro．pitsweredistributedatanobtuseanglethanth

6、atwithfightangleandacutetype．Formicro-texturedsurfaceoflineartexture，it’Sfoundthatthefrictioncoefficientdecreasesfirstandthenincreasesalongwithmicro·groovedepth，areaoccupancyandthenumberofrowsincreasing．Andthecoefficientoffrictionreachestheminimumwhenthem

7、icro‘groovedepthis69m，theareaoccupancyrateis40％，andtherankednumberis5．Meantime，thefrictioncoefficientissmallerwhentheanglebetweenmicro-grooveandtheslidingdirectionwas150。thanthatwithotherangles．Formicro-texturedsurfaceofmeshtexture，it’Sfoundthatthefrictio

8、ncoefficientdecreasesfirstandthenincreasesalongwithmicro-groovedepth，areaoccupancyandthenumberofrOWSincreasing．Andthecoefficientoffrictionreachestheminimum万方数据英文摘要whenthemicro-groovedepthis4Ⅲ[Il，theareaoccupancyrate