Re: Please help me with instructions/examples to get stress tensor on nodes.

[Konstantinos Poulios]

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 <mfrydman2@outlook.com> 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