Dear Marcelo, For modeling of plasticity, please have a look at the folder http://git.savannah.nongnu.org/cgit/getfem.git/tree/contrib/continuum_mechanics
Before starting using GetFEM for more advanced tasks, I strongly recommend you to read https://dl.acm.org/doi/10.1145/3412849 and look at the respective examples, found in: https://www.researchgate.net/publication/351304422_GetFEM_Automated_FE_Modeling_of_Multiphysics_Problems_Based_on_a_Generic_Weak_Form_Language_-_Numerical_Examples'_Source_Code or https://imechanica.org/node/24882 Feel free to ask again if you have any questions. Best regards Kostas On Mon, Jul 12, 2021 at 10:32 PM Marcelo Frydman <[email protected]> wrote: > Dear GetFem users, > > I have started using Getfem using python. It is powerful! > > > > I am currently running some examples using plasticity. It is calculating a > few useful results, including displacement(u) and Von-Mises stresses on > nodes. However, for Geomechanics evaluation I need the actual stress > tensor (Sigma_ij). I went through the examples. I found demo_tripod_alt > calculating the stresses but limited to elastic condition. > > > > Please help me with instructions/examples to get stress tensor on nodes for > plasticity. > > Is there a way use another failure criterion (different to Von-Mises or > Tresca), like Mohr-Coulomb? > > > > > > Thanks, > > > > Marcelo > > >
