梁结构工程分析.docx

作业三 梁结构工程分析结构的高度H=1.2m，宽度L=1m梁为I型梁，几何参数为W1=0.08m，W2=0.08m，W3=0.1m，t1=0.005m, t2=0.005m,T3=0.003m.梁框架的材料参数：弹性模量为2.01E11MPa,泊松比为0.3。载荷及边界条件为：框架结构顶端承受压力=1E5Pa计算分析模型如图1所示，在ANSYS中所使用的文件名：beam。下面对该平面结构进行整体建模和分析， 图1(1) 进入ANSYS(定义工作名称和工作标题) 程序 ANSYS File Change Jobname beam； Change TitleThe finite element analysis of beam structures OK(2) 设置计算类型 ANSYS Main Menu: Preferences Structural OK (3) 选择单元类型 ANSYS Main Menu: Preprocessor Element TypeAdd/Edit/Delete Add select Beam 3 node 189OK(back to Element Types window)OK CLOSE(the Element Types window)(4) 定义材料系数材料为钢，弹性模量E=2.01e11,泊松比V=0.3.ANSYS Main Menu: Preprocessor Material Props Material ModelsStructural Linear Elastic Isotropic: EX:2.01e11(弹性模量) PRXY：0.3（泊松比） OK(5) 定义梁截面ANSYS Main Menu: Preprocessor Sections BeamCommon Sections选择Sub-Type I型梁W1:0.08W2:0.08W3:0.1t1:0.005t2:0.005t3:0.003PrewiewOK如图2所示图2(6) 生成几何模型建立4个几何关键点ANSYS Main Menu: Preprocessor Modeling Create Keypoints In Active CS 1(0,0),2(1,0),3(1,1.2)， 4(0,1.2) OK生成线模型ANSYS Main Menu: Preprocessor Modeling Create Lines Lines Straight Line 依次连接点2341OK如图3.图3 (7) 网格划分ANSYS Main Menu: Preprocessor Meshing Default AttributesOK ANSYS Main Menu: Preprocessor MeshingMeshTool(Size Controls) lines: SetSIZE0.05OK (back to the mesh tool window)Mesh: lines MeshPick All (in Picking Menu) Close( the Mesh Tool window)PlotCtrlsStyleSizeDisplayoff如图4所示图4(8) 求解MainMenuSolutionDefine LoadsApplyStructuralDisplacementOn NodesPick AllLab2 DOFs:UZ,ROTX,ROTYOK如图5所示图5MainMenuSolutionDefine LoadsApplyStructuralDisplacementOn Nodes选择1号节点Lab2 DOFs:UX,XYOK如图4所示MainMenuSolutionDefine LoadsApplyStructuralDisplacementOn Nodes选择2号节点Lab2 DOFs:UYOKSelectEntitiesLinesSele AllApplyPlotLinesSelectEntitiesElementsAttached toLinesCancel施加载荷MainMenuSolutionDefine LoadsApplyStructuralPressureOn BeamsPick ALLLoad key：2node 1：-10000OK (9)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。如图6所示图6(10)结果显示ANSYS MAIN MENU: GeneralL Postproc Plot Results Contour Plot Nodal Solu .SELECT: DOF solution Rotation .Displacement vector sum OK，如图7所示。图7ANSYS MAIN MENU: GeneralL Postproc Plot Results Contour Plot Nodal Solu .SELE