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有限元分析软件
ANSYS6.1ed
上机指南
机械工程系
材料加工技术研究所
石伟
孔劲
6
超静定梁的有限元建模计算
计算分析模型如图所示
,
习题文件名
: statically
indeterminate beam
梁承受
均布载荷：
1
.
0
e
5
P
a
lm
lm
图
1
超静定梁的计算分析模型
6.1
进入
ANSYS
程序
→
ANSYSED
→
Interactive
→
change
the
working
directory
into
yours
→
input
Initial jobname:
statically
indeterminate
beam
→
Run
6.2
设置计算类型
ANSYS Main Menu
: Preferences
→
select
Structural
→
OK
6.3
选择单元类型
ANSYS Main Menu
:
Preprocessor
→
Element
Type
→
Add/Edit/Delete
→
Add
→
select
Beam
tapered 44
→
OK
(back
to
Element Types
window)
→
Close
(the
Element Type
window)
6.4
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
6.5
定义截面
ANSYS
Main
Menu:
Preprocessor
→
Sections
→
Beam
→
Common
Sectns
→
定义矩形
截面
:ID=1,B=0.01,H=0.1
→
OK
6.6
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(1,0),3(2,0)
,
4(0,0,1)
→
OK
1
－－
有限元分析软件
ANSYS6.1ed
上机指南
机械工程系
材料加工技术研究所
石伟
孔劲
?
生成梁
ANSYS Main Menu:
Preprocessor
→
Modeling
→
Create
→
Lines
→
lines
→
Straight lines
→
依次连接三个特征点，
1(0,0),
2(1,0),3(2,0)
→
OK
?
显示梁体
ANSYS
命令菜单栏：
PlotCt
rls >Style >Size and Style
→
/ESHAPE
→
On
→
OK
6.7
网格划分
ANSYS Main
Menu:
Preprocessor
→
Meshing
→
Mesh Attributes
→
Picked lines
→
OK
→
拾取
:
SECT:1
；
Pick Orientation Keyp
oint(s):YES
→
拾取：
4<
/p>
#
特征点
(0,0,1)
→
OK
→
Mesh
Tool
→
(
Size
Controls)
lines:
Set
→
Pick
All
(in
Picking
Menu)
→
input
NDIV:8
→
OK
(back
to
Mesh
Tool
window)
→
Mesh
→
Pick
All
(in
Picking
Menu)
→
Close
(the
Mesh
Tool
window)
6.8
模型施加约束
?
分别给
1
,2,3
三个特征点加约束
ANSYS
Main
Menu:
Solution
→
Define
Loads
→
Apply
→
Structural
→
Displacement
→
On
Keypoints
→
拾取
1,2,3
keypoints
→
OK
→
select
All DOF
→
OK
?
施加
y
方向的载荷
ANSYS
Main
Menu:
Solution
→
Define
Loads
→
Apply
→
Structural
→
Pressure
→
On
Beams
→
Pick
All
→
LKEY:2,V
ALI:100000
→
OK
6.9
分析计算
ANSYS Main
Menu:
Solution
→
Solve
→
Current
LS
→
OK
(to close
the
solve Current
Load Step
window)
→
OK
6.10
结果显示
ANSYS Main Menu:
General Postproc
→
Plot Results
→
Deformed Shape…
→
select
Def
+
Undeformed
→
OK
(back
to
Plot
Results
window)
→
Contour Plot
→
Nodal
Solu
→
select:
DOF
solution, UY, Def + Undeformed
,
Rotation, ROTZ ,Def +
Undeformed
→
OK
6.11
退出系统
ANSYS Utility
Menu:
File
→
Exit
→
Save
Everything
→
OK
2
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