ANSYS水坝分析实例

1、如图为某水坝的截面及尺寸图，坝体为混凝土浇筑，材料的弹性 模量为2.14X i010Pa泊松比为0.25,密度为2500kg/m3,坝体挡水面承 受静水压力作用，假设最危险的水平面刚好平坝底，计算重力和水压 力作用下的坝体的承载状态，求解整个坝体的位移图及应力云图。1、指定工作文件名 “ Utility Menu>File>Change Jobname”Cancel3 定义单元 “ Preprocessor>Element Type >Add/Edit/Delete4、定义弹性模量和泊松比 “ Preprocessor>Material Props >Mat

2、erialModels>Structural>Linear>Elastic>Isotropic”5、定义密度 "Preprocessor>Material Props >Material Models>Structural>Density”6、创建关键点 K1, “Preprocessor>Modeling>Create>Keypoints>InActive CS分另U定义 K2、 K,3、K,4、K,5、K6P0IHT5POIN HUMANSYSJU® 14 2D12LZ：52：DS7、 依 次 连

3、接 各 关键点“Preprocessor>Modeling>Create >Lines >Lines>StraightLin38、用线合成面积 “Preprocessor>Modeling>Create >Areas>Arbitrary>ByLines”9、定义关键点K7、K8,并分别与K3、K6连接，得到现L7、L8P0IHT5POIN HUMANSYSJTO 14 2D121Z：52：3310、用线L7、L8将A1切割打开网格划分 “ Preprocessor>Meshing>MeshToOl“Preprocessor

4、>Modeling>Operate>Blooleans>Divide>Area By Line"11、将L9平均分割为8份12、同理将L7平均分割为12份，将L8平均分割为34份，将L2平均分割为26份13、采用映射划分网格划分 A1、A214得到A1、A2的网格划分图ELZMEinSANSYS15、采用线连接 “ Preprocessor>Meshing>Concatenate>Lines Meshing国 Meth Attributes目 MeshTool国 Size Cntrlt因 Mesher Optsncatenat闪 Lin

5、es尸 AreasE Del ConcatsS Myh国 Modify Mesh囹 Check MeshS Clear16、将L3、L7连接成一条直线MHE5ANSYSLIKE HUM17、将L5、L8连接成一条直线18、将L7平均分割为12份、将L3平均分割为28份、将L8平均分割为34份，将L5平均分割为6份、将L4平均分割为6份ANSYSJTO 14 2D1219、采用映射划分网格划分 A4ANSYSJOT 14 2D1220、在底线 L9、L11、L2 上施加约束 “ Preprecessor>Loads>DefineLoads>Apply>Structuara

6、l>Displacemengt>On Lines"日 Loads田 Analytic Type 因 Fa£t Sol n Optn 日 Define Loads Settings臼 Apply StructuralDisplacement闪 On Lines用 On Areas刃 On Keypoints不 On Nodes历 On Node Comp 国 Symmetry B.C. 国 Antisymm B.CS Force/MomentApply U.ROT an LiDL1 Apply Displacements (U,ROT) on LinesLab2

7、DOFs to b已 constrainedApply asVALUE Displacement valueH$P Apply CancelELEMEH75ANSYS21、在 L1 、L3 上施加荷载 “ Preprocessor>Loads>DefineLoads>Apply>Structural>Pressure>On Line§日 LoadsE Analysis. Type Fast SoTn Optn Define Loads囹 SettingsEl Apply StructuralPressurS Displacement 田 FoKU/

8、Mnmgnt 日月 On Line* 闵 On Areas 用 On Node5 衣 On Node Con 闵 On Elements 入 On Element C 目 From Fluid Ai 为 On Beams 田 Temperature Inertia八 Apply PRES on linesSFL Apply PRES on lines as aIf Constant value then:VALUE Load PRES valueIf Constant value then:Optional PRES values at end J of line (leave blank f

9、or uniform PRES )ValueApplyCancelHelp22 、施加重力约束Preprocessor>Loads>DefineLoads>Apply>Structural>Inertia>Gravity ”I±1 i emperarure 日 Inertia Angular Velac3 Angular Accel 国 Coriolis EffectsS Gravity囱 On ComponenB 国 Inertia Relief国 Pretnsn Sectn23、进行求解 “ Solution>Solve>Curre

10、nt LS”E Solution国 Analysis Type国 Define Loads国 Load Step Opts3 £E Management (CMS)国 Re&ultfi Tracking臼 Solve左IB From LS FilesS Partial £oluEJ Manual Rezoning国 Multi-field Set Up国 ADAMS Connection国 Diagnostics目 Unabridged MenuISOLUTION OPTIONSPR0BLB1 DIMENSIONAL TV2-DDEGREES OF FREEDOMU

11、X UVANALVS1S T¥FEEFfiTIC <STEfiDV-STfiTE>GLOBALLV ASSEMBLED HATRIMSVHNETRIC.ORD STEP OPTIONSLOAD STEP NUMBER 1TIME AT END OF THE LOAD STEP1.000BNUMBER OF SUBSTEPS 1STEP CHANGE BOUNDRBYCONDITIONS -NOINERTIA LOADSXVZACEL 0,0000-9.80300,0090PRINT OUTPUT CONTROLSNO PRINTOUTDATABASE OUTPUT CON

12、TROLSALL DATA WRITTENFOR THE .AST EUBSTEFEIZMEinSANSYS24、绘制位移图 “ General Postproc>Plot Results>Contour Plot>DeformShape General Postproc ES Data & File Opts 国 Results Summary 田 Read Results 国 Failure Criteria 日 Plot Results Contour Plot 国 Nodal SoluE3 Element Soln.Elem Table 国 Line Elem

13、 ResE Vector Plot 田 Plot Path ItemE Concrete Plot 田 ThinFilmA Plot Deformed ShapePLD1SP Plot Deformed Shape KUND Items to be plottedL Def shape only* Def 4- undeforinedC Def + undef edgeCancelANSYSJUH 14 2DL2>I5BLJi£EM£NTSIEP=1LSOT -1IIME-1DKK =.00B33224、绘制云图 a General Postproc>Plot

14、Results>Contour Plot>Nodal Solu General Postprpc因 Data & File OptsB Results SummaryE Read Results田 Failure CriteriaEl Plot Results国 Deformed ShapeContour P加i国 Nodal Solu国 Element SoluB Elem TableS Line Elem Res国 Vector Plot田 Plot Path Item国 Concrete Plot由 ThinFilm选择显示方式Item to be contoured

15、囹 Favorites谄 Nodal Solution自 的 由 至I 届 切 至DOF SolutionStressTotal StrainElastic StrainPlastic Strain Creep Strain Thermal Strainr ToUl Mechanical and Thernnal Strain0 Swelling strain.EnergyR Failure CriteriaQ Body Temperatures,dX方向节点云图Y方向节点云图X方向应力云图Y方向应力云图APDL命令：!进入前处理器!定义单元体!定义弹性模量!定义泊松比!定义密度/PREP7E

16、T,1,PLANE42MP,EX,1,2.14e10MP,NUXY,1,0.25MP,DENS,1,2500K,1,-20,0,0K,2,80,0,0K,3,0,30,0K,4,0,100,0K,5,15,100,0K,6,15,85,0!创建关键点! 连点成线! 连线成面! 创建关键点! 连点成线! 切割图形LSTR,1,3LSTR,1,2LSTR,3,4LSTR,4,5LSTR,5,6LSTR,6,2AL,1,2,3,4,5,6K,7,0,0,0K,8,15,0,0LSTR,3,7LSTR,8,6ASBL,1,7ASBL,3,8ALLSEL,ALLLSEL,S,9LESIZE,9,8LSE

17、L,S,7LESIZE,7,12ASEL,S,AREA,2AATT,2,1MSHKEY,1! 选择全部线! 选择 L9!将 L9 平均分成8 份! 选择 A2! 选择映射划分方式! 选择 2D 四边形划分形式! 划分网格MSHAPE,0,2DAMESH,2ALLSEL,ALLLSEL,S,2LESIZE,2,26LSEL,S,8LESIZE,8,34ASEL,S,AREA,1AATT,1,1MSHKEY,1MSHAPE,0,2DAMESH,1ALLSEL,ALLLSEL,S,3,7LCCAT,ALLALLSEL,ALLLSEL,S,5,8! 连接LCCAT,ALLALLSEL,ALLLSEL,S,4LESIZE,2,6LSEL,S,3LESIZE,8,28LSEL,S,7LESIZE,8,12ASEL,S,AREA,4AATT,4,1MSHKEY,1MSHAPE,0,2DAMESH,