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Welded contact pair

Posted Feb 27, 2019, 7:32 p.m. EST 2 Replies

Panson Poon
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Hello,

I am new to Comsol. Before Comsol, I was using midas NFX.

Contacts in NFX support welded, general, rough, etc. The welded type does not allow separation in vertical and horizontal direction. Shall I use rigid connector in Comsol for this kind of contact?

The general one allows vertical seperation and horizontal sliding. I guess this is contact-pair with fritiction.

Thanks in advance.

Cheers, Panson

2 Replies Last Post Feb 28, 2019, 3:17 a.m. EST
Henrik Sönnerlind COMSOL Employee

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Posted: 6 years ago Feb 28, 2019, 2:27 a.m. EST

Hi,

For 'welded' contact you use an Identity Pair, together with a Continuity condition in Solid Mechanics.

The Contact features are intended for general contact simulations with separation and sliding. You could however also abuse the adhesion functionality in Contact to simulate a 'welded' state. That would essentially mean that you enforce the connection between the two parts using a penalty formulation, rather than by explicit pointwise constraints.

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi, For 'welded' contact you use an Identity Pair, together with a Continuity condition in Solid Mechanics. The Contact features are intended for general contact simulations with separation and sliding. You could however also abuse the adhesion functionality in Contact to simulate a 'welded' state. That would essentially mean that you enforce the connection between the two parts using a penalty formulation, rather than by explicit pointwise constraints. Regards, Henrik
Panson Poon
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Posted: 6 years ago Feb 28, 2019, 3:17 a.m. EST

Thank you Henrik.

Thank you Henrik.

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