平板的有限元建模与变形分析

1、平板的有限元建模与变形分析计算分析模型如图7-1所示，习题文件名：plane板承受均布载荷：1.0e5 Pa图7-1受均布载荷作用的平板计算分析模型7.1 进入 ANSYS程序 f ANSYSED 6.1 f Interactive f change the working directory into yours f input Initial jobname: plane Run7.2设置计算类型ANSYS Main Menu: Preferences f select Structural f OK7.3选择单元类型ANSYS Main Menu: Preprocessor f Elem

2、ent Type-Add/Edit/Delete f Add f select Solid Quad 4node 42 f OK (back to Element Types window) f Optionsf select K3: Plane stress w/thk f OKf Close (the Element Type window)7.4定义材料参数ANSYS Main Menu: Preprocessor f Material Props f Material Models f Structural fLinear f Elastic f Isotropic f input E

3、X:2.1e11, PRXY:0.3 f OK7.5定义实常数ANSYS Main Menu: Preprocessor f Real Constantsf Add. f select Type 1f OK f input THK:1 f OK f Close (the Real Constants Window)7.6生成几何模型/生成特征点ANSYS Main Menu: Preprocessor f Modeling f Create f Keypoints f In Active CS f 依次输入五个点的坐标：input:1(0,0),2(1,0), 3(1,1),4(0,1),5(

4、0.5,0.5) fOK/生成平板ANSYS Main Menu: Preprocessor f Modeling f Create f Areas f Arbitrary f Through KPS f连接特征点1,2,5 f Apply f连接特征点2,3,5 f Apply f连接特征点 3,4,5 f Apply f 连接特征点 4,1,5 f OK7.7网格划分ANSYS Main Menu: Preprocessor f Meshing f Mesh Tool f (Size Controls) lines: Set f Pick All(in Picking Menu) f in

5、put NDIV:1 f OKf (back to the mesh tool window)Mesh: Areas, Shape: Tri, Free f Mesh f Pick All (in Picking Menu) f Close( the Mesh Tool window)7.8模型施加约束/给模型施加x方向约束ANSYS Main Menu: Solution f Define Loads f Apply f Structural f Displacement f On Lines f拾取模型左部的竖直边：Lab2: UX f OK/施加y方向约束ANSYS Main Menu:

6、 Solution f Define Loads f Apply f Structural f Displacement f On Keypoints f 拾取 4# 特征点：Lab2: UY f OK7.9分析计算ANSYS Main Menu: Solution f Solve f Current LS f OK(to close the solve Current Load Step window) f OK7.10结果显示ANSYS Main Menu: General Postproc f Plot Results f Deformed Shape. f select Def + Undeformed f OK (back to Plot Results window) f Contour Plot f Nodal Solu f select: DO