依次输入x1=5, x2=5.5, y1=0, y2=5单击Apply
再输入 x1=5.5, x2=7.5, y1=1.5, y2=2.25单击Apply
最后输入x1=7.5, x2=8.0, y1=0.5, y2=3.75单击OK
将三个矩形加在一起
Main Menu: Preprocessor ->Modeling-Operate >Booleans-Add >Areas单击Pick All
打开线编号
Utility Menu >PlotCtrls > Numbering 线编号为ON,并使/NUM为Colors & Numbers
分别对线14与7;7与16;5与13;5与15进行倒角,倒角半径为0.25
Main Menu: Preprocessor ->Modeling-Create >Lines-Line Fillet
拾取线14与7,单击Apply,输入圆角半径0.25,单击Apply;
拾取线7与16,单击Apply,输入圆角半径0.25,单击Apply;
拾取线5与13,单击Apply,输入圆角半径0.25,单击Apply;
拾取线5与15,单击Apply,输入圆角半径0.25,单击OK;
打开关键点编号
Utility Menu >PlotCtrls > Numbering 关键点编号为ON,并使/NUM为Colors & Numbers
通过三点画圆弧
Main Menu>Preprocessor>Create>Arcs>By End KPs & Rad
拾取12及11点,单击Apply,再拾取10点,单击Apply,输入圆弧半径0.4, 单击Apply;
拾取9及10点,单击Apply,再拾取11点,单击Apply,输入圆弧半径0.4, 单击OK
由线生成面
Main Menu: Preprocessor -> -Modeling-Create -> -Areas-Arbitrary >By Lines
拾取线6、8、2单击Apply
拾取线20、19、21单击Apply
拾取线22、24、23单击Apply
拾取线17、18、12单击Apply
拾取线11、25单击Apply
拾取线9、26单击OK
将所以的面加在一起
Main Menu: Preprocessor ->Modeling-Operate >Booleans-Add >Areas单击Pick All
2.定义两个关键点(用来定义旋转轴)
Main Menu>Preprocessor>Create>Keypoints-In Active CS
NPT输入50,单击Apply
NPT输入51,Y输入6,单击OK。
3. 面沿旋转轴旋转22.5度,形成部分实体
Main Menu: Preprocessor ->Operate-Extrude >Areas- About Axis
拾取面单击Apply,拾取上面定义的两个关键点50,51,单击OK,输入圆弧角度22.5,单击OK。
4. 定义一个被减圆柱体
首先将坐标平面进行平移并旋转
Utility Menu >WorkPlane >Offset WP to >Keypoints
拾取关键点14和16,单击OK
将工作平面沿X轴转-90度
Utility Menu >WorkPlane >Offset WP by Increments
在XY,YZ,ZX Angles输入0,-90,0单击Apply.
创建实心圆柱体
Main Menu>Preprocessor>Create>Cylinder-By Dimensions
RAD1输入0.45,Z1,Z2坐标输入1,-2,单击OK
5.将圆柱体从轮体中减掉
Main Menu>Preprocessor>Operate->Booleans-Subtract >Volumes
首先拾取轮体,单击Apply,然后拾取圆柱体,单击OK。
6. 工作平面与总体笛卡尔坐标系一致
Utility Menu >WorkPlane >Align WP With>Global Cartesian
此处将模型另存为Wheel.db
7. 将体沿XY坐标面映射
Main Menu>Preprocessor>Reflect >Volumes
拾取体,并选择X-Y plane 单击OK
8. 旋转工作平面
Utility Menu >WorkPlane >Offset WP by Increments
在XY,YZ,ZX Angles输入0,-90,0单击Apply.
在XY,YZ,ZX Angles输入22.5,0,0单击Apply.
8.在工作平面原点定义一个局部柱坐标系
Utility Menu >WorkPlane >Local Coordinate Systems>Create Local CS>At WP Origin
KCN为11,KCS为Cylindrical 1
9.将体沿周向旋转8份形成整环。
Main Menu>Preprocessor>Copy>Volumes
拾取Pick All,ITIME输入8,DY输入45,单击OK。
EX3. 练习主题:自下向上实体建模建立连杆模型
练习目的:熟悉从下向上建模的过程
- 进入ANSYS工作目录,将 “c-rod” 作为jobname。
- 创建两个圆面:
Main Menu > Preprocessor > -Modeling- Create > -Areas- Circle > By Dimensions …
RAD1 = 1.4
RAD2 = 1
THETA1 = 0
THETA2 = 180, 单击[Apply]
然后设置THETA1 = 45,再单击[OK] - 打开面:编号
Utility Menu > PlotCtrls > Numbering …
设置面号on, 然后单击[OK] - 创建两个矩形面:
Main Menu > Preprocessor > -Modeling- Create > -Areas- Rectangle > By Dimensions
X1 = -0.3, X2 = 0.3, Y1 = 1.2, Y2 = 1.8, 单击[Apply]
X1 = -1.8, X2 = -1.2, Y1 = 0, Y2 = 0.3, 单击 [OK] - 偏移工作平面到给定位置 (X=6.5):
Utility Menu > WorkPlane > Offset WP to > XYZ Locations +
在ANSYS输入窗口输入6.5
[OK] - 将激活的坐标系设置为工作平面坐标系:
Utility Menu > WorkPlane > Change Active CS to > Working Plane - 创建另两个圆面:
Main Menu > Preprocessor > -Modeling- Create > -Areas- Circle > By Dimensions …
RAD1 = 0.7
RAD2 = 0.4
THETA1 = 0
THETA2 = 180, 然后单击[Apply]
第二个圆THETA2 = 135, 然后单击[OK] - 对面组分别执行布尔运算:
Main Menu > Preprocessor > -Modeling- Operate > -Booleans- Overlap > Areas +
首先选择左侧面组, 单击 [Apply]
然后选择右侧面组, 单击[OK] - 将激活的坐标系设置为总体笛卡尔坐标系:
Utility Menu > WorkPlane > Change Active CS to > Global Cartesian - 定义四个新的关键点:
Main Menu > Preprocessor > -Modeling- Create > Keypoints > In Active CS
第一个关键点, X=2.5, Y=0.5, 单击[Apply]
第二个关键点, X=3.25, Y=0.4, 单击[Apply]
第三个关键点, X=4, Y=0.33, 单击[Apply]
第四个关键点, X=4.75, Y=0.28, 单击[OK] - 将激活的坐标系设置为总体柱坐标系:
Utility Menu > WorkPlane > Change Active CS to > Global Cylindrical - 通过一系列关键点创建多义线:
Main Menu > Preprocessor > -Modeling- Create > -Lines- Splines > With Options > Spline thru KPs +
如图按顺序拾取六个关键点, 然后单击 [OK]
XV1 = 1
YV1 = 135
XV6 = 1
YV6 = 45
[OK] - 在关键点1和18之间创建直线:
Main Menu > Preprocessor > -Modeling- Create > -Lines- Lines > Straight Line +
拾取如图的两个关键点, 然后单击 [OK]