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Weld Suppression?

jtillery
1-Newbie

Weld Suppression?

I'm having some difficulty with Creo Simulation 2.0 using perimeter welds. For model that I have created a perimeter weld feature, every time I start the simulation the weld that I have created and the contact interface that I have also created are suppressed.

Is there a way to make the application accept this joining condition?

Is there a proper way to make the perimeter weld work?

Should I not use the contact interface and the weld feature together?

I would greatly appreciate any help with my issue and/or any tips.


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1 ACCEPTED SOLUTION

Accepted Solutions
346gnu
12-Amethyst
(To:jtillery)

John,

end, spot, perimeter and weld features are shells only.

Shells can be in 3-d assemblies.

Welds do not work with solids

You need another method.

Create a surface region on the side of your doubler that is in 'contact'

The surface region defines a border that will become bonded.

Parts that touch are assumed bonded.

Create a free/contact between the surface region and the mating part leaving the border bonded.

All will be solids

atb

Charles

View solution in original post

7 REPLIES 7
346gnu
12-Amethyst
(To:jtillery)

John,

Can you give a bit more detail with respect to how the contact and the perimeter weld cooperate?

General comments -

Perimeter welds - doublers; usually

Only shells

Contacts don't work with shells (hence suppression)

Space between is 'air'

Doublers add an 'indicative stiffness'; stresses are not trustworthy.

Next bunch of questions would include:

Why do you need the perimeter weld?

What do you want to find out?

As Steven suggests, any pictures/models?

Charles,

When I run the model with both the contact and weld unsuppressed, I get a warning that informs me that the they have become suppressed, though the results show something different.

Upon running a another design iteration, both have, in fact, been suppressed.

So you can not use the perimeter weld at all on 3D assemblies?

I need the perimeter weld to join the pieces together, in order to avoid the surfaces from being bonded, which would give me an unrealistic results.

346gnu
12-Amethyst
(To:jtillery)

John,

end, spot, perimeter and weld features are shells only.

Shells can be in 3-d assemblies.

Welds do not work with solids

You need another method.

Create a surface region on the side of your doubler that is in 'contact'

The surface region defines a border that will become bonded.

Parts that touch are assumed bonded.

Create a free/contact between the surface region and the mating part leaving the border bonded.

All will be solids

atb

Charles

Steven,

The contact is is between two surfaces have a perimeter weld around the border.

(I apologize for the terrible picture.)

Weld_Contact_Picture.png

Hi John,

Have you tried adding a surface region to both parts that your are assigning the contact region too to set the boundary for the weld penetration?

Thanks,

Don Anderson

Don,

Is that not what Charles was suggesting?

---------------

Creating a surface region does work. Now I can create the appropriate contact and bonded interfaces.

Thanks Charles and Don.

Yes, what John said, his post was not showing when I replied.

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