Unlinked node error with breached CON...

Log Out | Topics | Search Moderators | Register | Edit Profile

Author Message   Richard Beeler (rmbeeler) Member Username: rmbeeler Post Number: 5 Registered: 11-2004 Posted on Tuesday, February 07, 2006 - 03:45 pm:    I found a new way to make CONTACT/JUMP break in 3D. (I'm not trying . . . honest!) If a vertical CONTACT/JUMP condition exists between two regions, and a third region is overlaid such that it covers up part of the CONTACT/JUMP surface, I get an UNLINKED NODE error. Example attached. 2.2 K contact_breached.pde "Example of breached CONTACT/JUMP"   Richard Beeler (rmbeeler) Member Username: rmbeeler Post Number: 6 Registered: 11-2004 Posted on Tuesday, February 07, 2006 - 04:31 pm:    Appologies, but the previous example was not really representative of what I'm trying to do. The enclosed one is better. This one however gives the old familiar UNSYMMETRIC MAP error. But, this time it does it with only one CONTACT surface. Maybe this will help diagnose the cause of the UNSYMMETRIC MAP errors which previously involved two CONTACT surfaces.   Richard Beeler (rmbeeler) Member Username: rmbeeler Post Number: 7 Registered: 11-2004 Posted on Wednesday, February 08, 2006 - 08:26 am:    Oops. Here's the example. 2.4 K contact_breached_b.pde "NONSYMMETRIC MAP with only one CONTACT"   Richard Beeler (rmbeeler) Member Username: rmbeeler Post Number: 8 Registered: 11-2004 Posted on Friday, February 10, 2006 - 02:24 pm:    The problem described above is fixed by modest mesh refinement. That does not fix the problem described in my thread of 1/19/2006 in which an error occurs when contact on a surface meets contact on a region boundary.