ansysworkbench总结

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1、Workbench总结1.CAD建模几个重要的概念与功能（1）PART多体部件体fromnewpart和布尔操纵体的区别，Part内部无接触，可定义不同材料（2）Active和Freeze冻结体（3）Slice功能与Freeze的配合使用（4）抑制体的使用suppress（5）面印记ImprintFace的功能（6）概念建模：产生面体（7）要在CADorDM中使用UseCADorDMto:–Simplifythegeometry–Mergesmalledges–Mergethefacesinordertoreducethenumberoffaces–Avoidnarrowfaces–Keep

2、volumegapsonlywhereimportant–Decomposethegeometry–Removeunnecessarygeometries–Addgeometries–Repairthegeometry2.网格划分技巧：•StrategiestoImproveMeshQuality策略–CADCleanup清理–VirtualTopology拓扑–PinchControls微量控制–SensibleMeshSizingandInflationSettings网格大小控制和膨胀设置–GeneralRecommendations一般建议–•MeshQualityMetricsin

3、ANSYSMeshing网格质量检查–Skewness偏斜–AspectRatio纵横比–WorstElement最差单元•MeshmetricsavailableinANSYSMeshinginclude:–ElementQuality–AspectRatio–JacobRation–WarpingFactor–ParallelDeviation–MaximumCornerAngle–Skewness1网格质量检查Twomethodsfordeterminingskewness:1.BasedontheEquilateralVolumedeviation:•Skewness=•Applie

4、sonlytotrianglesandtetrahedron•Defaultmethodfortrisandtets偏斜=（正四面体--实际四面体）/正四面体2.BasedonthedeviationfromaNormalizedAngledeviation:•Skewness=Whereθeistheequiangularface/cell(60fortetsandtris,and90forquadsandhexas)•Appliestoallcellandfaceshapes单元和面•Usedforprismsandpyramids棱柱和棱锥–skewness–ForHexa,Trian

5、dQuad:itshouldbelessthan0.8–Fortetrahedra:itshouldbelessthan0.9AspectRatio纵横比（1）Aspectforgenerictrianglesandquadsisafunctionoftheratiooflongestsidetotheshortestsideofthereconstructedquadrangles(seeUserGuidefordetails)（2）Equalto1(ideal)foranequilateraltriangleorasquare•ForAspectRatio:–Itshouldbeless

6、than40,butthisdependsontheflowcharacteristics–Morethan50maybetoleratedattheinflationlayersWorstElement最差单元•ForAspectRatio:–Itshouldbelessthan40,butthisdependsontheflowcharacteristics–Morethan50maybetoleratedattheinflationlayers•ForCellSizeChange:Itshouldbebetween1and2.2策略•Model中的VirtualTopology的功能：

7、合并。Howtouse??删去不必要的合并。MeshingMethod–InappropriateusageofMeshingMethod(Automatic,Tetrahedrons,Sweep,MultiZoneandCFX-Mesh)mayleadtolargeskewness–TheselectionoftheMeshingMethoddependsonthegeometryandapplicatio