Ansys练习-梁模型（精选）课件.ppt

1、建筑框架建筑框架练习练习 4梁模型梁模型INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-24. 梁模型梁模型建筑框架建筑框架确定建

2、筑物框架由于重力和确定建筑物框架由于重力和0.25 psi的的“雪载荷雪载荷”引起的变形和引起的变形和应力。应力。假定假定: 数据库文件含几何模型和已定义的材料特性。数据库文件含几何模型和已定义的材料特性。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 -

3、 Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-34. 梁模型梁模型建筑框架建筑框架1.按教师指定的工作目录，用按教师指定的工作目录，用“bldg”作为作业名，进入作为作业名，进入ANSYS。2.恢复恢复 “bldg-geom.db1” 数据库文件数据库文件, 然后画线，观察完整几何模型。然后画线，观察完整几何模型。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2I

4、NTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-44. 梁模型梁模型建筑框架建筑框架3.定义三种工字型截面和一种箱型截面，然后存储数据库。定义三种工字型截面和一种箱型截面，然后存储数据库。Main Menu Preprocessor Sections -Beam- Common Sectns .ID = 1, Name = colum

5、n, Sub-Type = IW1 = 12, W2 = 12, W3 = 12.12, t1 = 0.605, t2 = 0.605, t3 = 0.39按按ApplyID = 2, Name = girder, Sub-Type = IW1 = 10.425, W2 = 10.425, W3 = 16.97, t1 = 0.985, t2 = 0.985, t3 = 0.585按按ApplyID = 3, Name = beam, Sub-Type = IW1 = 6.535, W2 = 6.535, W3 = 8.06, t1 = 0.465, t2 = 0.465, t3 = 0.28

6、5按按ApplyID = 4, Name = peak, Sub-Type = (hollow rectangle)W1 = 6, W2 = 6, t1 = 0.25, t2 = 0.25, t3 = 0.25, t4 = 0.25按按OK在工具条上按在工具条上按 SAVE_DBINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.

7、7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-54. 梁模型梁模型建筑框架建筑框架3.(续续)或使用命令:/PREP7SECTYPE,1,BEAM,I,COLUMNSECDATA,12,12,12.12,.605,.605,.39SECTYPE,2,BEAM,I,GIRDERSECDATA,10.425,10.425,16.97,.985,.985,.585SECTYPE,3,BEAM,I,BEAMSECDATA,6.535,6.535,8.0

8、6,.465,.465,.285SECTYPE,4,BEAM,HREC,PEAKSECDATA,6,6,.25,.25,.25,.25,0,0,0,0SAVEINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop Suppleme

9、ntJanuary 30, 2001Inventory #001444W4-64. 梁模型梁模型建筑框架建筑框架4.指定指定“column”梁截面，剖分垂直线网格。梁截面，剖分垂直线网格。Utility Menu WorkPlane Change Active CS to Global CartesianUtility Menu Select Entities.按按z坐标坐标Min=0， Max =119 ，选择线。选择线。从全部中选择从全部中选择, 按按Apply, 按按 ReplotMain Menu Preprocessor MeshTool 单元特性单元特性: 设置为设置为 Lines

10、，并按并按 Set。拾取拾取Pick AllMAT = 1, TYPE = 1, SECT = 1, Pick Orientation keypoints = Yes,按按 OK键入定位关键点号键入定位关键点号102，按按 Enter 键键 ,然后按然后按OK网格尺寸控制网格尺寸控制 : Lines， 按按 SetPick All在对话框中设定在对话框中设定NDIV = 4, 然后按然后按 OK剖分网格剖分网格: 设置为设置为Lines，然后按然后按MeshPick AllUtility Menu PlotCtrls Style Size and Shape ./ESHAPE = ONOKIN

11、TRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-74. 梁模型梁模型建筑框架建筑框架4.(续续)或使用命令:CSYS,0LSEL,S,

12、LOC,Z,0,119LATT,1,1,102,1 LESIZE,ALL,4 LMESH,ALL /ESHAPE,1EPLOT INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2

13、001Inventory #001444W4-84. 梁模型梁模型建筑框架建筑框架5.指定指定“girder” 梁截面，剖分水平线网格。梁截面，剖分水平线网格。选择实体:按按Y坐标坐标Min, Max = 480，选择线选择线从全部中选择从全部中选择,按按Apply,按按 Plot设定设定Min, Max = 240追加选择追加选择, 按按Apply, 按按ReplotMin, Max = 0追加选择追加选择, 按按Apply, 按按Replot设置设置Z坐标坐标 ; Min, Max = 0,119反选择反选择, 按按Apply, 按按Replot网格工具:单元特性单元特性: Lines:

14、按按 SetPick All设置设置MAT = 1, TYPE = 1, SECT = 2, Pick Orientation keypoints = Yes, 按按OK键入定位关键点号键入定位关键点号101，按按 Enter 键键 ,然后按然后按OK网格尺寸控制网格尺寸控制 : Lines: 按按SetPick All在对话框中设定在对话框中设定NDIV = 6, 然后按然后按 OK按按 MeshPick AllINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5

15、.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-94. 梁模型梁模型建筑框架建筑框架5.(续续)或使用命令:LSEL,S,LOC,Y,480LSEL,A,LOC,Y,240LSEL,A,LOC,Y,0LSEL,U,LOC,Z,0,119LATT,1,1,101,2LESIZE,ALL,6LMESH,ALLINT

16、RODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-104. 梁模型梁模型建筑框架建筑框架6.指定指定“”“”peak“ ” 梁截面，剖分水

17、平线网格。梁截面，剖分水平线网格。选择实体:按按Z坐标坐标Min, Max = 121, 165 ，选择线选择线从全部中选择从全部中选择,按按Apply,按按Plot网格工具:单元特性单元特性: Lines： 按按 SetPick All设置设置MAT = 1, TYPE = 1, SECT = 4, Pick Orientation keypoints = Yes, 按按OK键入定位关键点号键入定位关键点号103，按按 Enter 键键 ,然后按然后按 OK网格尺寸控制网格尺寸控制: Lines: 按按 SetPick All在对话框中设定在对话框中设定NDIV = 4, 然后按然后按 OK

18、按按 MeshPick All或使用命令:LSEL,S,LOC,Z,121,165LATT,1,1,103,4LESIZE,ALL,4LMESH,ALLINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJ

19、anuary 30, 2001Inventory #001444W4-114. 梁模型梁模型建筑框架建筑框架7.指定指定“beam”梁截面，剖分其余网格。梁截面，剖分其余网格。选择实体:按截面按截面 ID号，号， Min, Max = 1,4选择线。选择线。从全部中选择从全部中选择, 按按 Apply,按按 Invert,按按 Plot网格工具:单元特性单元特性: Lines: 按按 SetPick All设置设置MAT = 1, TYPE = 1, SECT = 3, Pick Orientation keypoints = Yes,按按 OK键入定位关键点号键入定位关键点号103，按按 E

20、nter 键键 ,然后按然后按 OK网格尺寸控制网格尺寸控制: Lines: 按按 SetPick All在对话框中设定在对话框中设定NDIV = 6, 然后按然后按 OK按按 MeshPick All或使用命令:LSEL,S,SEC,1,4LSEL,INVELATT,1,1,101,3LESIZE,ALL,6LMESH,ALLINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part

21、2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-124. 梁模型梁模型建筑框架建筑框架8.用壳单元剖分屋顶网格。用壳单元剖分屋顶网格。网格工具:单元特性单元特性: 为为 Global: 按按 SetTYPE = 2, MAT = 1, ESYS = 0, SECNUM = No Section按按 OK网格网格: 设置为设置为 Areas形状形状:设置为设置为“Quad” 和和 Free按按Mes

22、hPick All或使用命令:TYPE,2SECNUM,0AMESH,ALLINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-134

23、. 梁模型梁模型建筑框架建筑框架9.用表面效应单元覆盖屋顶。用表面效应单元覆盖屋顶。选择实体:按单元名按单元名93选择单元。选择单元。从全部中选择从全部中选择,按按Apply,按按 Plot选择与单元连接的节点选择与单元连接的节点从全部中选择从全部中选择, 按按Apply, 按按Plot网格工具:单元特性单元特性: 为为 Global: 按按 SetTYPE = 3, MAT = 1, ESYS = 0, SECNUM = No Section按按 OKPreprocessor -Modeling- Create Elements -Surf / Contact- Surf Effect -G

24、enerl Surface- No extra Node +Pick All或使用命令:ESEL,S,ENAME,93NSLE,STYPE,3ESURF,ALLINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop Supplem

25、entJanuary 30, 2001Inventory #001444W4-144. 梁模型梁模型建筑框架建筑框架10. 固定底部节点固定底部节点 (Z=0的节点的节点)的所有自由度。的所有自由度。11. 荷载步荷载步 1: 在在Z方向上施加重力荷载。方向上施加重力荷载。Main Menu Solution -Loads- Apply Gravity ACELZ = 386OK或使用命令:ACEL,38612. 选择选择 everything, 存储数据库存储数据库, 求解第一个荷载步。求解第一个荷载步。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTI

26、ON TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-154. 梁模型梁模型建筑框架建筑框架13. 荷载步荷载步 2: 在所有表面效应单元施加压力荷载。在所有表面效应单元施加压力荷载。选择实体:按单元类型号按单元类型号 Mi

27、n, Max = 3选择实体选择实体从全部中选择从全部中选择,按按 Apply,按按 ReplotMain Menu Solution -Loads- Apply Pressure On Elements +Pick AllLKEY = 5VALUE = 0.25VAL2, VAL3, VAL4 = 0, 0, -1按按 OKUtility Menu PlotCtrls Symbols /PBC = All Applied BCs/PSF = Pressures用箭头显示压力和对流用箭头显示压力和对流按按 OK或使用命令:ESEL,S,TYPE,3SFE,ALL,5,PRES,0.25,0,0

28、,-1/PSF,PRES,2EPLOTINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-164. 梁模型梁模型建筑框架建筑框架14.

29、 选择选择everything, 存储数据库，求解第二荷载步。存储数据库，求解第二荷载步。15. 进入进入POST1 (通用后处理器通用后处理器)从第一荷载步读入数据。从第一荷载步读入数据。16. 不选择壳和表面效应单元不选择壳和表面效应单元(单元类型单元类型 2 和和 3)，画出变形图。，画出变形图。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION

30、 TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-174. 梁模型梁模型建筑框架建筑框架17. 从第二荷载步从第二荷载步 (下一组下一组) 读入结果，画出变形图，如果需要，可以画变形动画图。读入结果，画出变形图，如果需要，可以画变形动画图。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7

31、- Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-184. 梁模型梁模型建筑框架建筑框架18. 按截面按截面 ID = 1 (columns) 重新选择单元，并画出应力重新选择单元，并画出应力 SX (轴向弯曲应力轴向弯曲应力)。19. 为了更清晰为了更清晰, 关闭单元轮廓线。关闭单元轮廓线。Utility Menu

32、PlotCtrls Style Edge Options /GLINE = None/REPLOT = ReplotOK或使用命令:/GLINE,-1/REPLOTINTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop Suppl

33、ementJanuary 30, 2001Inventory #001444W4-194. 梁模型梁模型建筑框架建筑框架20. 画出画出girder梁的应力梁的应力 (ID = 2)SX。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Wo

34、rkshop SupplementJanuary 30, 2001Inventory #001444W4-204. 梁模型梁模型建筑框架建筑框架21. 画出画出beam梁的应力梁的应力 (ID = 3)SX。INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2INTRODUCTION TO ANSYS 5.7 - Part 2Workshop SupplementJanuary 30, 2001Inventory #001444W4-214. 梁模型梁模型建筑框架建筑框架22. 画出画出“peak”梁的应力梁的应力 (ID = 4)SX。23. 最后最后, 退出退出ANSYS，不存储任何内容。不存储任何内容。