[CIG-LONG] frictionless surfaces using Gale

[Matty Mookerjee]

Hello all,

I was wondering if anyone has had success creating frictionless surfaces in Gale.  If I squish (technical term) a box against one of the bounding walls it behaves frictionless (at least it appears to), but when I have one rigid block squishing a weaker block that surface seems to have a lot of friction.  In fact, where those to objects are in contact with each other no sliding occurs at all.  I have tried setting boundaryCohesion, boundaryCohesionAfterSoftening, boundaryFrictionCoefficient and boundaryFrictionCoefficientAfterSoftening all to zero and adding <param name="boundaryBottom">True</param>.

I have done this for both objects (although obviously boundaryTop = True for the lower block) which are both using the DruckerPrager rheology.

Even so, the boundaries seem to be stuck together.

I would appreciate any suggestions.

Thanks,

Matty Mookerjee

Department of Geology
Sonoma State University
1801 E. Cotati Ave.
Rohnert Park, CA 94928

Office: (707) 664-2002
e-mail: matty.mookerjee at sonoma.edu

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://geodynamics.org/pipermail/cig-long/attachments/20111031/0e9f22e1/attachment.htm