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The material resulting from an intersection
operation between two bodies is the material shared by these bodies. This tasks
illustrates how to compute two intersections. |
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When working in a CATProduct
document, it is no longer necessary to copy and paste the bodies belonging
to distinct parts before associating them. You can directly associate
these bodies using the same steps as described in this task. |
![](../icons_C2/common/aprereq.gif) |
Open the Intersect1.CATPart document. |
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1. |
The initial part is composed of three
bodies. Each body contains one pad. To compute the intersection between the Part Body and Body
2, select Body.2. |
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Intersecting a set of bodies (multi-selected via the Ctrl
key) is possible. This capability will increase your productivity. |
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![](images/bt023NLS.gif) |
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2. |
Click the Intersect...
icon. The Intersect dialog box
displays to let you determine the second body you wish to use. By default, the application
proposes to intersect the selected body to Part Body.
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3. |
Click OK to confirm. CATIA computes the
intersection between the two bodies.
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![](images/dbintersectNLS.gif) |
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Part Body now looks like this:
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![](images/bt024NLS.gif) |
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4. |
Now delete the intersection to go back to the previous state. You are going to
create a new intersection. |
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5. |
Select Body 2 and right-click to
select the Edit -> Body2.object ->
Intersect contextual command. This displays the Intersect dialog box. |
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6. |
Select Body1 in the specification tree to edit the After field. |
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7. |
Click OK. Body1 now looks like this:
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![](images/bt025NLS.gif) |
![ainfo.gif (980 bytes)](../icons_C2/common/awarning.gif) |
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![](_themes/v5r5/ul1.gif) |
You cannot
re-apply the Assemble, Add, Trim, Intersect, Remove and Remove Lump commands
to bodies already associated to other bodies. However, if you copy and paste the result of
such operations elsewhere in the tree you can then use these commands. |
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![](_themes/v5r5/ul1.gif) |
Avoid using input elements that are tangent to each
other since this may result in geometric instabilities in the tangency
zone. |
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Structuring Your Design
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Generally speaking, using Boolean Operations is a good way
of structuring your part. Prior to designing, you can actually define the
part's structure by associating a body containing geometry with empty bodies. Once these
specifications are done, you can then concentrate on the geometry. |
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