> You could get the dof coefficients corresponding to a du/dx (get dphi > for each shape function at the point where you want a gradient > evaluation, take the x component of each) and insert them into a > constraint row, but this is not likely to be the most accurate way to > solve your problem. Not sure what you're solving (contact? porous > media flow?) Porous media flow (pressure and displacements)
> but there's probably a formulation out there somewhere > which enforces a pressure-strain relationship weakly rather than with > point-by-point constraint equations. I guess I found something in the boundary integrals that come out of the green theorem. You are right - I was certainly in the wrong direction. I believe I'm getting back to track now... Thanks! Renato ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
