Tsinghua-ansys资料!基础篇.doc

梁的有限元建模与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行计算。 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=0.007 1.1 进入ANSYS 程序 →AnsysED 6.1 →Interactive →change the working directory into yours →input Initial jobname: beam→Run 1.2设置计算类型 ANSYS Main Menu: Preferences →select Structural → OK 1.3选择单元类型 ANSYS Main Menu: Preprocessor →Element Type→Add/Edit/Delete… →Add… →select Beam 2 node 188 →OK (back to Element Types window) →Close (the Element Type window) 1.4定义材料参数 ANSYS Main Menu: Preprocessor →Material Props →Material Models →Structural →Linear →Elastic →Isotropic →input EX:2.1e11, PRXY:0.3 → OK 1.5定义截面 ANSYS Main Menu: Preprocessor →Sections →Beam →Common 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=0.007 →OK 1.6生成几何模型 生成特征点 ANSYS Main Menu: Preprocessor →Modeling →Create →Keypoints →In Active 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 ANSYS Main Menu: Preprocessor →Modeling →Create →Lines →lines →Straight lines →连接两个特征点，1(0,0),2(10,0) →OK 1.7 网格划分 ANSYS Main Menu: Preprocessor →Meshing →Mesh Attributes →Picked 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) →OK→Mesh Tool →Size Controls) lines: Set →Pick All(in Picking Menu) →input NDIV:5 →OK (back to Mesh Tool window) → Mesh →Pick All (in Picking Menu) → Close (the Mesh Tool window) 1.8 模型施加约束 最左端节点加约束 ANSYS Main Menu: Solution →Define Loads →Apply →Structural →Displacement → On Nodes →pick the node at (0,0) → OK → select UX, UY,UZ,ROTX → OK 最右端节点加约束 ANSYS Main Menu: Solution →Define Loads →Apply →Structural →Displacement → On Nodes →pick the node at (10,0) → OK → select UY,UZ,ROTX → OK 施加y方向的载荷 ANSYS Main Menu: Solution →Define Loads →Apply →Structural →Pressure → On Beams →Pick All →VALI:100000 → OK 1.9 分析计算