1、Project6 超静定梁的有限元求解.11Project7 平板的有限元建模与变形分析 13Project1 梁的有限元建模与变形分析计算分析模型如图1-1 所示, 习题文件名: beam。NOTE:要求选择不同形状的截面分别进展计算。图1-1梁的计算分析模型梁截面分别采用以下三种截面单位:m:矩形截面: 圆截面: 工字形截面:B=0.1, H=0.15 R=0.1 w1=0.1,w2=0.1,w3=0.2, t1=0.0114,t2=0.0114,t3=0.0071.1进入ANSYS程序AnsysED 6.1Interactive change the working directory
2、into yours input Initial jobname: beamRun1.2设置计算类型ANSYS Main Menu: Preferences select Structural OK1.3选择单元类型 Preprocessor Element TypeAdd/Edit/DeleteAddselect Beam2 node 188OK (back to Element Types window)Close (the Element Type window)1.4定义材料参数 Preprocessor Material Props Material ModelsStructural
3、LinearElasticIsotropicinput EX:2.1e11, PRXY:0.3 OK1.5定义截面ANSYSMain Menu:PreprocessorSections Beam mon Sectns分别定义矩形截面、圆截面和工字形截面:矩形截面:ID=1,B=0.1,H=0.15 Apply 圆截面:ID=2,R=0.1 Apply 工字形截面:ID=3,w1=0.1,w2=0.1,w3=0.2,t1=0.0114,t2=0.0114,t3=0.007OK 1.6生成几何模型生成特征点 Preprocessor ModelingCreateKeypoints In Activ
4、e CS依次输入三个点的坐标:input:1(0,0),2(10,0),3(5,1)OK生成梁 Preprocessor ModelingCreateLineslinesStraight lines 连接两个特征点,1(0,0),2(10,0) OK1.7网格划分 ANSYS Main Menu: Preprocessor MeshingMesh AttributesPicked lines OK选择: SECT:1根据所计算的梁的截面选择编号;Pick Orientation Keypoint(s):YES拾取:3#特征点(5,1) OKMesh Tool Size Controls) li
5、nes: Set PickAll(in Picking Menu)input NDIV:5OK (back to MeshTool window) Mesh Pick All (in Picking Menu) Close (the MeshTool window)1.8模型施加约束最左端节点加约束 SolutionDefine Loads ApplyStructuralDisplacementOn Nodespick the node at (0,0) OKselectUX, UY,UZ,ROTX OK最右端节点加约束 SolutionDefine Loads ApplyStructural
6、DisplacementOn Nodespick the node at (10,0) OKselectUY,UZ,ROTX OK施加y方向的载荷 SolutionDefine Loads ApplyStructuralPressureOn BeamsPick AllVALI:100000 OK1.9 分析计算 SolutionSolveCurrent LSOK(to close the solve Current Load Step window) OK1.10 结果显示 General Postproc Plot ResultsDeformed Shapeselect Def + Unde
7、formedOK (back to Plot Results window)Contour PlotNodalSoluselect:DOF solution, UY, Def + Undeformed, Rotation, ROTZ,Def + UndeformedOK1.11 退出系统 ANSYS Utility Menu: File ExitSave EverythingOKProject2 坝体挡土墙的有限元建模与应力应变分析计算分析模型如图2-1 所示, 习题文件名: dam。图21 坝体的计算分析模型2.1进入ANSYS damRun2.2设置计算类型2.3选择单元类型 Prepro
8、cessor Element TypeAdd/Edit/Delete Add select Solid Quad 4node 42 OK (back to Element Types window) Optionsselect K3: Plane StrainOKClose (the Element Type window)2.4定义材料参数2.5生成几何模型 Preprocessor ModelingCreateKeypoints In Active CS依次输入四个点的坐标:1(0,0),2(10,0),3(1,5),4(0.45,5)OK生成坝体截面 Preprocessor Model
9、ingCreateAreasArbitrary Through KPS依次连接四个特征点,1(0,0),2(10,0),3(1,5),4(0.45,5) OK2.6网格划分 Preprocessor MeshingMeshTool(Size Controls) lines: Set 依次拾取两条横边:OKinput NDIV: 15Apply依次拾取两条纵边:OK input NDIV: 20 OK(back to the mesh tool window)Mesh: Areas, Shape: Quad, Mapped MeshPick All (in Picking Menu) Close
10、( the MeshTool window)2.7模型施加约束分别给下底边和竖直的纵边施加x和y方向的约束 SolutionDefine Loads ApplyStructuralDisplacementOn linespick the lines OKselectLab2:UX, UY OK给斜边施加x方向的分布载荷ANSYS 命令菜单栏: ParametersFunctions Define/Edit1) 在下方的下拉列表框内选择x ,作为设置的变量;2) 在Result窗口中出现X,写入所施加的载荷函数:1000*X;3) FileSave(文件扩展名:func) 返回:Paramete
11、rsFunctions Read from file:将需要的.func文件打开,任给一个参数名,它表示随之将施加的载荷OK ANSYS Main Menu: SolutionDefine Loads ApplyStructuralPressure On Lines 拾取斜边;OK 在下拉列表框中,选择:Existing table OK 选择需要的载荷参数名OK2.8分析计算2.9 结果显示 General Postproc Plot ResultsDeformed Shapeselect Def + UndeformedOK (back to Plot Results window)Contour PlotNodal Soluselect:DOF solution, UX,UY, Def + Undeformed, Stress,SX,SY,SZ, Def + UndeformedOK2.10 退出系统 File Exit Save EverythingOKProject3 受内压作用的球体的有限元建模与分析计算分析模型如图3-1 所示, 习题文件名: sphere。图3-1受均匀内压的球体计算分析模型截面图3.1进入ANSYS sphereRun3.2设置计算类型 Preferencesselect Structural OK3.3选择单元类型
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