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Electrical Heating in a Busbar with Terminals
For a description of this application, including detailed step-by-step instructions showing how to build it, see the book Introduction to AC/DC Module. The modeling instructions for the geometry is given in the appendix.
Application Library path: ACDC_Module/Introductory_Electric_Currents/busbar_terminal
Appendix: Modeling Instructions for the Geometry
From the File menu, choose New.
New
In the New window, click  Model Wizard.
Model Wizard
1
In the Model Wizard window, click  3D.
2
Click  Done.
Global Definitions
Parameters 1
1
In the Model Builder window, under Global Definitions click Parameters 1.
2
In the Settings window for Parameters, locate the Parameters section.
3
In the table, enter the following settings:
Name
Expression
Value
Description
L
9[cm]
0.09 m
Length
rad_1
6[mm]
0.006 m
Bolt radius
tbb
5[mm]
0.005 m
Thickness
wbb
5[cm]
0.05 m
Width
Geometry 1
Work Plane 1 (wp1)
1
In the Geometry toolbar, click  Work Plane.
2
In the Settings window for Work Plane, locate the Plane Definition section.
3
From the Plane list, choose xz-plane.
4
Click  Go to Plane Geometry.
Axis
1
In the Model Builder window, expand the Component 1 (comp1) > Geometry 1 > Work Plane 1 (wp1) > View 2 node, then click Axis.
2
In the Settings window for Axis, locate the Axis section.
3
In the x minimum text field, type -1e-2.
4
In the x maximum text field, type 0.11.
5
In the y minimum text field, type -1e-2.
6
In the y maximum text field, type 0.11.
7
Locate the Grid section. Select the Manual spacing checkbox.
8
In the x spacing text field, type 5e-3.
9
In the y spacing text field, type 5e-3.
Work Plane 1 (wp1) > Rectangle 1 (r1)
1
In the Work Plane toolbar, click  Rectangle.
2
In the Settings window for Rectangle, locate the Size and Shape section.
3
In the Width text field, type L+2*tbb.
4
In the Height text field, type 0.1[m].
Work Plane 1 (wp1) > Rectangle 2 (r2)
1
In the Work Plane toolbar, click  Rectangle.
2
In the Settings window for Rectangle, locate the Size and Shape section.
3
In the Width text field, type L+tbb.
4
In the Height text field, type 0.1[m]-tbb.
5
Locate the Position section. In the yw text field, type tbb.
6
Click  Build Selected.
Work Plane 1 (wp1) > Difference 1 (dif1)
1
In the Work Plane toolbar, click  Booleans and Partitions and choose Difference.
2
Select the object r1 only to add it to the Objects to add list.
3
In the Settings window for Difference, locate the Difference section.
4
Click to select the  Activate Selection toggle button for Objects to subtract.
5
Select the object r2 only.
6
Click  Build Selected.
Work Plane 1 (wp1) > Fillet 1 (fil1)
1
In the Work Plane toolbar, click  Fillet.
2
On the object dif1, select Point 3 only.
3
In the Settings window for Fillet, locate the Radius section.
4
In the Radius text field, type tbb.
Work Plane 1 (wp1) > Fillet 2 (fil2)
1
In the Work Plane toolbar, click  Fillet.
2
On the object fil1, select Point 6 only.
3
In the Settings window for Fillet, locate the Radius section.
4
In the Radius text field, type 2*tbb.
5
Click  Build Selected.
Extrude 1 (ext1)
1
In the Model Builder window, under Component 1 (comp1) > Geometry 1 right-click Work Plane 1 (wp1) and choose Extrude.
2
In the Settings window for Extrude, locate the Distances section.
3
In the table, enter the following settings:
Distances (m)
wbb
4
Click  Build Selected.
5
Click the  Zoom Extents button in the Graphics toolbar.
Work Plane 2 (wp2)
1
In the Geometry toolbar, click  Work Plane.
2
In the Settings window for Work Plane, locate the Plane Definition section.
3
From the Plane type list, choose Face parallel.
4
On the object ext1, select Boundary 8 only.
5
Click  Go to Plane Geometry.
Work Plane 2 (wp2) > Plane Geometry
Click the  Zoom Extents button in the Graphics toolbar.
Work Plane 2 (wp2) > Circle 1 (c1)
1
In the Work Plane toolbar, click  Circle.
2
In the Settings window for Circle, locate the Size and Shape section.
3
In the Radius text field, type rad_1.
4
Click  Build Selected.
Extrude 2 (ext2)
1
In the Model Builder window, under Component 1 (comp1) > Geometry 1 right-click Work Plane 2 (wp2) and choose Extrude.
2
In the Settings window for Extrude, click  Build Selected.
3
Locate the Distances section. In the table, enter the following settings:
Distances (m)
-2*tbb
Work Plane 3 (wp3)
1
In the Geometry toolbar, click  Work Plane.
2
In the Settings window for Work Plane, locate the Plane Definition section.
3
From the Plane type list, choose Face parallel.
4
On the object ext1, select Boundary 4 only.
5
Click  Go to Plane Geometry.
Work Plane 3 (wp3) > Plane Geometry
Click the  Zoom Extents button in the Graphics toolbar.
Work Plane 3 (wp3) > Circle 1 (c1)
1
In the Work Plane toolbar, click  Circle.
2
In the Settings window for Circle, locate the Size and Shape section.
3
In the Radius text field, type rad_1.
4
Locate the Position section. In the xw text field, type -L/2+1.5[cm].
5
In the yw text field, type -wbb/4.
6
Click  Build Selected.
Work Plane 3 (wp3) > Copy 1 (copy1)
1
In the Work Plane toolbar, click  Transforms and choose Copy.
2
Select the object c1 only.
3
In the Settings window for Copy, locate the Displacement section.
4
In the yw text field, type wbb/2.
5
Click  Build Selected.
Extrude 3 (ext3)
1
In the Model Builder window, under Component 1 (comp1) > Geometry 1 right-click Work Plane 3 (wp3) and choose Extrude.
2
In the Settings window for Extrude, locate the Distances section.
3
In the table, enter the following settings:
Distances (m)
-2*tbb
4
Click  Build Selected.
5
Click the  Zoom Extents button in the Graphics toolbar.
Form Union (fin)
1
In the Model Builder window, click Form Union (fin).
2
In the Settings window for Form Union/Assembly, click  Build Selected.