B2ICEM面网格绘制

2/23/2007©2006ANSYS,Inc.Allrightsreserved.ANSYSICEMCFDV11Inventory#0023821-1FEA模型:面网格Workshop22/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-2ANSYSICEMCFDV11TrainingManualANSYSv11.0打开Project选择FileOpenProject切换到midsurf_trane工作目录打开:midsurf.prj步骤:1.定义网格尺寸2.定义单元连接关系3.设置线参数4.定义对称边界条件5.定义约束6.定义载荷7.生成面网格2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-3ANSYSICEMCFDV11TrainingManualANSYSv11.0设置网格尺寸#1#2#4#3#5Mesh-GlobalMeshSetup-ShellMeshingParameters设置网格类型Quadw/oneTri设置网格方法PatchDependentIgnoresize0.05打开respectlineelements设置TryHarderto3ApplyMesh-PartMeshSetup如图，设置MaxsizeApply&Dismiss#32/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-4ANSYSICEMCFDV11TrainingManualANSYSv11.0定义连接#1#2#3#7Mesh-Defineconnectors-Boltholes通过选择Bolt曲线byparts然后选择partCONNECTORApply模型树里面创建了一个connectorbranch#4#5#62/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-5ANSYSICEMCFDV11TrainingManualANSYSv11.0设置曲线网格尺寸#1Mesh-CurveMeshSetup选择curvesbyparts–选择ConnectorPart和Fixedpart。设置Numberofnodes5Apply在模型树里面右键点击曲线，选择显示节点分布。#2#4#62/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-6ANSYSICEMCFDV11TrainingManualANSYSv11.0创建对称边界条件Constraints-CreateConstraint/Displacement设置名字X_SYMMETRY在Entitytype项中,选择CreateConstraint/Displacementoncurve选择X对称面上的曲线设置UX,ROTY,ROTZ=0Apply一个Displacementbranch加入到模型树中，如右图所示同样,定义Z_SYMMETRY边界条件.对于Z-symmetry设置UZ,ROTX,ROTY为02/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-7ANSYSICEMCFDV11TrainingManualANSYSv11.0创建约束Constraints-CreateConstraint/Displacement创建FIX_ALL_DOF在Entitytype项,选择CreateConstraint/Displacementoncurve在CORNERpart底部选择3个孔的曲线设置UX,UY,UZ,ROTX,ROTYandROTZ为0Apply2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-8ANSYSICEMCFDV11TrainingManualANSYSv11.0加载压力载荷Loads-PlacePressure设置名字Uniform_Pressure在Entitytype项,选择PlacePressureonSurface加载在几何面上。选择显示的表面设置Pressureto1000UnitsApply一个Loads目录树添加到了模型树2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-9ANSYSICEMCFDV11TrainingManualANSYSv11.0创建网格Mesh-ComputeMesh-SurfaceMeshonly选择所有几何Compute#5#6#102/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-10ANSYSICEMCFDV11TrainingManualANSYSv11.0检查边除了TOP_MIDSURF关掉所有的parts右键点击Mesh选择Diagnostics复选SingleEdge，显示单边选择EdgesandFaces显示打开ShowonlyproblemsApply.单边是指不和其他壳单元相连接的自由边。对于面网格，指的是边界。在这个例子中，面内有自由边，暗示网格没有连通。通过合并节点来连接节点。2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-11ANSYSICEMCFDV11TrainingManualANSYSv11.0节点合并EditMesh-Mergenodes-MergeTolerance框选所有可见节点设定容差f0.03复选Ignoreprojection项Apply有几个点没有合并，是由于容差不够。那么采用交互式对个别节点操作。EditMesh-Mergenodes-MergeInteractive选择要合并的节点复选IgnoreprojectionApply将所有面网格内部的悬挂点去除。2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-12ANSYSICEMCFDV11TrainingManualANSYSv11.0检查网格质量EditMesh-DisplayMeshQuality选择要检查的单元类型选择网格质量判别标准Apply右键点击柱状图选择Replot设置MinXvalue=-1,MaxXvalue=1设置MaxYHeight=10左键点击质量低于0.1的。右键点击选择Subset创建质量低于0.1的子集2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-13ANSYSICEMCFDV11TrainingManualANSYSv11.0将四边形转为三角形EditMesh-ConvertMeshType-QuadtoTri选择网格单元模式为：Subset（网格质量较差的四边形）选择subsetDIAGNOSTIC/”Quality”Accept子集内的四边形单元转为三角形单元2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-14ANSYSICEMCFDV11TrainingManualANSYSv11.0合并节点再次检查网格质量。有一个质量低于,在柱状图里面点击0.1以下的，查找、定位那个单。右下图可见，这是个很尖锐的单元，合并节点去掉这个单元。EditMesh-MergeNodes-MergeInteractive选择2个节点Apply2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-15ANSYSICEMCFDV11TrainingManualANSYSv11.0创建Bar单元EditMesh-CreateElements创建Bolt_Weld0part单元类型能够选择Bar(线单元)设置Method为Fromnodes选择如下图所示的两个BAR单元汇集中心节点Apply一个Loads目录加入到模型树中2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-16ANSYSICEMCFDV11TrainingManualANSYSv11.0创建材料属性Properties-CreateMaterialProperties-CreateTable（创建非线性材料数据表）输入名字TABLE1输入ID为1材料类型Nonlinear（非线性）在表格输入应力与应变参数值AcceptApplyProperties-CreateMaterialProperty输入材料名字STEELType:IsotropicYoung’sModulus=200000Poisson'sratio=0.3在StressLimitsforTension中选择变量，选择上步输入的表格TABLE1Apply2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-17ANSYSICEMCFDV11TrainingManualANSYSv11.0分配材料属性Properties-Define2DElementProperties选择所有的part设置typeShell选择材料STEEL点击Thickness.CORNER,SIDE1andSIDE2.1的厚度已经存在了。这些值是用中间面工具计算的。在partTOP_MIDSURF里面没有厚度，因为它是偏移出的曲面。输入厚度TOP_MIDSURF0.035Apply2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-18ANSYSICEMCFDV11TrainingManualANSYSv11.0查看壳厚度2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-19ANSYSICEMCFDV11TrainingManualANSYSv11.0定义刚度#1#2#3#4#51.Properties-Define1DElementProperties2.选择partBOLT_WELD03.选择typeRigids4.设置RigidtypeRigidBody(RBE2)5.Apply保存project2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-20ANSYSICEMCFDV11TrainingManualANSYSv11.0输出到求解器1、选择求解器：Solveoptions-SetupSolverParameters选择AbaqusassolverApply2、选择分析问题类型SolveOptions-SetupAnalysisType选择SolverAbaqus分析物理问题：Structural分析类型：静态Static其余缺省设置Apply3、边界条件文件输出Solveoptions-Write/ViewInputFileSolverAbaqusAcceptalldefaultsToggleonViewAbaqusFileApply2/23/2007©2006ANSYS,Inc.Allrightsreserved.Inventory#0023821-21ANSYSICEMCFDV11TrainingManualANSYSv11.0Aba