XANSYS Message: 93135 [Go back to message list] [bookmark on del.icio.us]
No rating yet Subject: Re: [STRUC] Bonded contacts Author: Odd Einar Lindøe Date: 2008-05-03 22:25:36Hi there. Its all given in TFM3.8 Real Constants. Contact tech is just springs in normal,tangent and opening. Its very hard to control and you must monitor all 3 directions and adjust stiffness to whatever is acceptable to you. Ideally there should be no relative movements in the 3 directions, but for a deformable contact this may be hard/impossible to achieve .Contact tech is generally also an error source in results if the mesh is coarse and not identical at both faces.
I would advice you to run small test models to verify the contact behaviour and stiffness tweaking until you become familiar with what to do / (or not to do :)
Brgds O.E.Lindoe, ImencoAS
----- Original Message ----- From: "Christiane Caouette" To: Sent: Friday, May 02, 2008 9:02 PM Subject: [Xansys] [STRUC] Bonded contacts
> > Hello everyone, > This is my first post; I hope I have done everything properly... > My question is about bonded contacts: I have looked everywhere I could > think of (ansys help, google, library...), but I haven't been able to > find the mathematical description of these elements, only that of > standard contact elements. So what does Ansys do to keep those bonded > elements from opening? Is it a restriction on allowed nodal > displacement? Like, they can't move out of the pinball region, or can't > move relative to one another (target nodes vs contact nodes)? > If anyone has any suggestions (or references I could check) to shed > some light on this... thanks! > Christiane Caouette, jr eng. > PhD Student at Ecole de Technologie Superieure > > > ^-------------------------------------------------------- > | XANSYS - www.xansys.org | > | The Discussion List for users of ANSYS, Inc. Software | > | Hosted by PADT - www.padtinc.com | > ^--------------------------------------------------------
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