Geometry 1
Draw the geometry by making a union of two rectangles. Round off the corners of the trench using fillets.
Add Two Rectangles
1
In the Model Builder under Component 1, right-click Geometry 1 and choose Rectangle .
2
In the Settings window for Rectangle under Size:
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In the Width text field enter 1.6e-5
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In the Height text field enter 3e-5
3
Under Position:
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In the x text field enter -0.8e-5
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In the y text field enter 1e-5
Add another rectangle.
4
Right-click Geometry 1 and choose Rectangle .
5
In the Settings window for Rectangle under Size:
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In the Width text field, enter 0.4e-5
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In the Height text field enter 1e-5
6
Under Position, in the x text field enter -0.2e-5.
7
Click the Build Selected button then click the Zoom Extents button in the Graphics toolbar.
The geometry should match this figure:
Add a Union Node and a Fillet Node
1
In the Model Builder right-click Geometry 1 and choose Booleans and Partitions >Union .
2
In the Settings window under Union, click to clear the Keep interior boundaries checkbox. Then add the objects r1 and r2 to the Input objects section, for example, by clicking each rectangle in the Graphics window.
3
Click the Build Selected button .
4
To smooth the edges of the lower rectangle, add a Fillet node. This can be done by Right-clicking Geometry 1 and choosing Fillet .
5
In the Graphics window for the object uni1, select Vertices 3–6 only (as shown in the figure).
6
Confirm that 3,4,5,6 are added to the Vertices to fillet list.
7
In the Settings window for Fillet under Radius, enter 1e-6 in the Radius text field.
8
In the Model Builder, right-click the Form Union node and select Build Selected .
The final geometry should match the figure.