ANSYS水坝分析实例

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2.14×1010Pa,泊松比为0.25，密度为2500kg/3m,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“UtilityMenuFileChangeJobname”2、定义标题名“UtilityMenuFileChangeTitle”3定义单元“PreprocessorElementTypeAdd/Edit/Delete”4、定义弹性模量和泊松比“PreprocessorMaterialPropsMaterialModelsStructuralLinearElasticIsotropic”5、定义密度“PreprocessorMaterialPropsMaterialModelsStructuralDensity”6、创建关键点K1,“PreprocessorModelingCreateKeypointsInActiveCS”分别定义K2、K,3、K,4、K,5、K67、依次连接各关键点“PreprocessorModelingCreateLinesLinesStraightLine”8、用线合成面积“PreprocessorModelingCreateAreasArbitraryByLines”9、定义关键点K7、K8，并分别与K3、K6连接，得到现L7、L810、用线L7、L8将A1切割“PreprocessorModelingOperateBlooleansDivideAreaByLine”打开网格划分“PreprocessorMeshingMeshTool”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15、采用线连接“PreprocessorMeshingConcatenateLines”16、将L3、L7连接成一条直线17、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19、采用映射划分网格划分A420、在底线L9、L11、L2上施加约束“PreprecessorLoadsDefineLoadsApplyStructuaralDisplacemengtOnLines”21、在L1、L3上施加荷载“PreprocessorLoadsDefineLoadsApplyStructuralPressureOnLines”22、施加重力约束“PreprocessorLoadsDefineLoadsApplyStructuralInertiaGravity”23、进行求解“SolutionSolveCurrentLS”24、绘制位移图“GeneralPostprocPlotResultsContourPlotDeformShape”24、绘制云图“GeneralPostprocPlotResultsContourPlotNodalSolu”选择显示方式X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：/PREP7!进入前处理器ET,1,PLANE42!定义单元体MP,EX,1,2.14e10!定义弹性模量MP,NUXY,1,0.25!定义泊松比MP,DENS,1,2500!定义密度K,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LSTR,1,3LSTR,1,2LSTR,3,4LSTR,4,5LSTR,5,6LSTR,6,2!连点成线AL,1,2,3,4,5,6!连线成面K,7,0,0,0K,8,15,0,0!创建关键点LSTR,3,7LSTR,8,6!连点成线ASBL,1,7ASBL,3,8!切割图形ALLSEL,ALL!选择全部线LSEL,S,,,9!选择L9LESIZE,9,,,8!将L9平均分成8份LSEL,S,,,7LESIZE,7,,,12ASEL,S,AREA,,2!选择A2AATT,2,,1MSHKEY,1!选择映射划分方式MSHAPE,0,2D!选择2D四边形划分形式AMESH,2!划分网格ALLSEL,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,,,5,8LCCAT,ALL!连接ALLSEL,ALLLSEL,S,,,4LESIZE,2,,,6LSEL,S,,,3LESIZE,8,,,28LSEL,S,,,7LESIZE,8,,,12ASEL,S,AREA,,4AATT,4,,1MSHKEY,1MSHAPE,0,2DAMESH,4ALLSEL,ALLSFL,1,,PRES,10000SFL,3,,PRES,9000!对两边施加分布荷载ACEL,,-9.8!施加重力荷载DL,2,,ALL,0DL,9,,ALL,0DL,11,,ALL,0!对底线进行约束ALLSEL,ALL/SOLU!进入求解SOLVE!求解当前荷载FINISH/POST1!进入后处理器PLDISP,2!绘制变形图PLNSOL,U,X!绘制X方向节点云位移图PLNSOL,U,Y!绘制Y方向节点云位移图PLNSOL,S,X!绘制X方向应力云图PLNSOL,S,Y!绘制Y方向应力云图