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Multisections surface guide support

AFROUZ.E

New member
As you know, it is possible to impose a tangency support to guide curves in the command. Can you please attach a sample of using this option?
 

MrCATIA

Super Moderator
The support (or Reference Surface) is used to define an angular reference to determine the angle of the swept surface (0 deg = tangent, 90 deg = normal).

In my example below; I've want to use Swept Surface to extrapolate the right edge of the yellow surface in the tangent direction; so I use the yellow surface as the Reference Surface and set the Angle = 0 degrees.

swept surf.jpg
 
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AFROUZ.E

New member
Thanks MrCATIA.

It's very simple, but had not been come into my mind though. ;)
Perhaps because it is more comfortable to create it with the referece surface subtype of the sweep command.
 

MrCATIA

Super Moderator
I apologize AFROUZ.E for my previous post. After re-reading the original post, I realize you asked about the MULTI-SECTION tool and my reply was regarding the SWEEP tool. Please let me try to provide a better example for you.

The option to specify a Tangent condition along the Guide curve is similar to the SWEEP tool. It imposes a direction along the guided edge of the surface, providing better continuity between the MULTI-SECTION surface and the adjoining surface.

In this new example, I would like to create a Multi-Section surface between the two lines which are created tangent to the yellow surface. If I do not include a Guide curve, the result is a simple, flat surface (brown) as shown below. No continuity at all!

multi-sect 1.JPG

By imposing the edge of the yellow surface as a Guide curve, the Multi-Section surface does follow the shape of the yellow surface and does have G0 continuity. However, if we JOIN the two surface, we discover there is indeed Tangency discontinuity.

multi-sect 2.JPG

Imposing tangency along the guide curve can be done by selecting the yellow surface. The Multi-Section surface is slightly different now, and can be verifed by with the JOIN tool. A Gaussian analysis should also verify good continuity between the two surfaces.

multi-sect 3.JPG
 
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AFROUZ.E

New member
No apology. I thanked you before because I found what I have to do to reach my goal. Your example in the first post lit the way up for me, although it was created by the sweep command. I thank you again for your second detailed post.
 

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