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KratosMultiphysics / Kratos

Kratos Multiphysics (A.K.A Kratos) is a framework for building parallel multi-disciplinary simulation software. Modularity, extensibility and HPC are the main objectives. Kratos has BSD license and is written in C++ with extensive Python interface.
https://kratosmultiphysics.github.io/Kratos/
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About material model in PFEM2 application #5652

Closed Gaoliu19910601 closed 5 years ago

Gaoliu19910601 commented 5 years ago

Hi everyone I am a new user to Kratos and I am planning to use to PFEM2 application to study geotechnical problem. However it seems that there is no soil models in the application. I notice that there is a UMAT application in Kratos. Can I use it to embed soil model such as MohrCoulumn model in PFEM2? or is there other way to do it ? It will be of great help for me.

philbucher commented 5 years ago

@KratosMultiphysics/pfem2

philbucher commented 5 years ago

@miguelmaso

dcagritan commented 5 years ago

Dear @Gaoliu19910601, What do you exactly want to simulate and what are the partial differential equations you'd like to solve? Please let me know about the details and I'll do my best to help you. Regards, Deniz

Gaoliu19910601 commented 5 years ago

Dear @dcagri Thanks so much for your kindness. I want to study the pile penetration into soil. It is a 2D axisymmetric problem and the pile could be regarded a rigid body. I intend to use MohrCoulomb mode to describe the behavior of the soil. Could it be done in PFEM2 and what are the main steps to do it?

dcagritan commented 5 years ago

Dear @Gaoliu19910601, I'm afraid to tell you that, I believe that PFEM2 is not the best choice of application for the test case you want to conduct. PFEM2 is a good method for single-fluid, or multi-fluid flows. However for solid applications, and especially for your test case, I'd encourage you to employ MPM(Material Point Method). @KratosMultiphysics/mpm Please feel free to contact us if you have any other inquiry or doubts. I wish you a nice day. Kind Regards, Deniz

Gaoliu19910601 commented 5 years ago

Hi @dcagri Thanks so much for your detailed repaly. In fact, I am also trying to study this problem using MPM. However, I encouter a problem about how to define the designated velocity of a pile (maybe it should be treated as a rigid body or just a body with a prescribed velocity?) but I do not how to apply a prescribed velocity on a body in MPM application. Do you know how to do it? Best regards Liu Gao

PeterJosephWilson commented 5 years ago

Thanks for your interest Liu! :)

I believe this can be done, although I am a little rusty at Kratos myself at the moment. I think @bodhinandach or @tteschemacher could probably help you out.