计算力学课程设计的ansys计算步骤.doc
算例1:设深梁承受均布荷载,如图1所示,假定E=1,泊松比,不计容重,厚度,为平面应力问题。因对称取半边结构计算,结构支承,单元划分、节点编号如图所示,试画出y=6m及y=0m截面的竖向位移图,x=3m截面的应力分布图。图1图2将结构分为36个单元单元划分及编号如图2。1、 输入名称:File-Change Jobname-输入kcsj-OK2、 选择单元类型:Main Menu-preprocessor-Element Type-Add/Edit/Delete-Add-选择Solid:Quad 4node 42-Ok-Options-在K3处选择Plane strs W/thk-OK-Close3、 定义材料参数ANSYS Main Menu: Preprocessor Material Props Material ModelsStructural Linear Elastic Isotropic: EX:1e9 (弹性模量),PRXY:0.17(泊松比) OK 鼠标点击该窗口右上角的“r”来关闭该窗口4、定义实常数以确定平面问题的厚度ANSYS Main Menu: Preprocessor Real Constants Add/Edit/Delete Add Type 1 OKReal Constant Set No: 1 (第1号实常数), THK: 1 (平面问题的厚度) OK Close5、生成几何模型 生成节点ANSYS Main Menu: Preprocessor Modeling Create Nodes In Active CS Node number:1,X,Y,Z Location in active CS:0,6,0 Apply Node number:2,X,Y,Z Location in active CS:1,6,0 Apply 同样依次输入其余27个节点坐标OK生成单元ANSYS Main Menu: Preprocessor Modeling Create Elements Auto Numbered Thru Nodes 点击1,5,2号节点 Apply 点击2,5,6号节点 Apply 同样生成其余单元OK6、模型施加约束和外载加Y方向的约束ANSYS Main Menu: Solution Define Loads Apply Structural Displacement On Nodes 用鼠标选择节点25 OK Lab2 DOFs: UY(默认值为零) OK加X方向的约束ANSYS Main Menu: Solution Define Loads Apply Structural Displacement On Nodes 用鼠标选择右边上的所有节点(可用选择菜单中的box拉出一个矩形框来框住左边线上的节点,也可用single来一个一个地点选) OK Lab2 DOFs: UX(默认值为零) OK施加节点荷载ANSYS Main Menu: Solution Define Loads Apply Structural Force/Moment On Nodes 点击1,4号节点 OK Lab:FY, Value: -50000 OKANSYS Main Menu: Solution Define Loads Apply Structural Force/Moment On Nodes 点击2,3号节点 OK Lab:FY, Value: - OK7、分析计算ANSYS Main Menu:Solution Solve Current LS OK Should the Solve Command be Executed? Y Close (Solution is done! ) 关闭文字窗口8、结果显示ANSYS Main Menu:General Postproc List Results Element Solution Element solution Stress X-Component of Stress OK (返回到List Results) Nodal Solution Nodal solution DOF Solution Displacement vector sum OK(还可以观察其他结构)算例2:图示楔形体受自重及齐顶水压作用,弹性模量泊松比,厚度t=100m,自重,水的容重取为,按平面应变问题计算,试分别用二单元平均法和绕节点平均法整理y=2m,y=2.5m截面上的,并进行比较。 1、输入名称:File-Change Jobname-输入kcsj-OK2、 选择单元类型:Main Menu-preprocessor-Element Type-Add/Edit/Delete-Add-选择Solid:Quad 4node 42-Ok-Options-在K3处选择Plane Strain-OK-Close3、 定义材料参数ANSYS Main Menu: Preprocessor Material Props Material ModelsStructural Linear Elastic Isotropic: EX:2e10 (弹性模量),PRXY:0.167(泊松比) OK DensityDENS:2400鼠标点击该窗口右上角的“r”来关闭该窗口4、生成几何模型 生成节点ANSYS Main Menu: Preprocessor Modeling Create Nodes In Active CS Node number:1,X,Y,Z Location in active CS:0,10,0 Apply Node number:2,X,Y,Z Location in active CS:0,8,0 Apply 同样依次输入其余19个节点坐标OK生成单元ANSYS Main Menu: Preprocessor Modeling Create Elements Auto Numbered Thru Nodes 点击1,2,3号节点 Apply 点击2,4,5号节点 Apply 同样生成其余单元OK3、 模型施加约束和外载施加约束ANSYS Main Menu: Solution Define Loads Apply Structural Displacement On Nodes 用鼠标选择底边所用节点 OK Lab2 DOFs: UX,UY,(默认值为零) OK施加节点荷载ANSYS Main Menu: Solution Define Loads Apply Structural Force/Moment On Nodes 点击1号节点 OK Lab:FY, Value: -6666.7 Apply 同样输入其他节点力OK施加重力ANSYS Main Menu: Solution Define Loads Apply StructuralInertiaGravityGlobalACELY:10OK7、分析计算ANSYS Main Menu:Solution Solve Current LS OK Should the Solve Command be Executed? Y Close (Solution is done! ) 关闭文字窗口8、结果显示ANSYS Main Menu:General Postproc List Results Element Solution Element solution Stress X-Component of Stress OK (返回到List Results) Nodal Solution Nodal solution DOF Solution Displacement vector sum OK(还可以观察其他结构)