[Libmesh-users] regarding post-process...

[Vasilis V. <va...@gm...>]

Hello all :)

I attached a source file that implements a displacement-based formulation
for steady-state 2D elasticity (very simple example for someone to
understand it) and this piece of code works FINE. For my practice i also
implemented a mixed formulation (displacements-stresses) and i did manage to
evaluate them correctly. If there is anyone that may need it i can post it
as well!!!

My problem in the displacement formulation (see source code file) is that
after the numerical evaluation of displacements i couldn't find a way to
calculate nodal stresses in the post-process.

Although the same question it was posted both from me and others in the past
( see
http://sourceforge.net/mailarchive/forum.php?thread_name=.139.91.194.170.1226927623.squirrel%40www.mead.upatras.gr&forum_name=libmesh-users),
i still cannot implement the ExplicitSystem class so as to do my
post-process! I red over & over again the documentation for this class but
it was really hard for me to figure out a way to do it! :( Unfortunately i
got very confused due to the fact that i'm bery new to LibMesh as well as
its "vast" size of documentation for classes...


I'd really appreciate if someone can help me out with this...
Apart from useful advices, any handy source code is really really welcomed
:)

many thanks in advance ~:^)