This project aims at proving tools (functions, classes, bindings, etc…) to handle behaviours written using MFront generic interface. For information about MFront, see http://thelfer.github.io/tfel/web/index.html.

Those tools are meant to be used by (FEM, FFT, etc.) solver developers. This tools are not linked to the TFEL libraries. Permissive licences have been chosen to allow integration in open-source and proprietary codes.

The MFrontGenericInterface C++ library

The project is build around the MFrontGenericInterface library. This library provides two main functions:

• the mgis::behaviour::load functions loads MFront behaviours from external shared libraries and retrieve all relevant meta data function. Those relevant information are stored in the mgis::behaviour::Behaviour class.
• the mgis::behaviour::integrate integrates the behaviour over one time step. The data associated with an integration point are handled by the mgis::behaviour::BehaviourData class which contains the state of the integration point at the beginning and at the end of the time step.

The library also supports handling a group of integration points though the mgis::behaviour::MaterialStateManager class.

An introduction to the C++ library may be found here

Projects using MGIS or in which MGIS can be coupled

• code-aster
• OpenGeoSys. See this talk for details.
• FEniCS. Coupling with FEniCS can be made using the python bindings (See this talk and this tutorial for details). However, we recommend using the higher level mgis.fenics module.
• MFEM through the MFEM-MGIS. See this talk for details.
• MoFEM. See this talk for details.
• Europlexus
• XPer. See this talk for details.
• MBDyn. See this demo.
• The (yet to be released) solver MANTA developed at CEA (Jamond et al. 2022).
• JuliaFEM through the MFrontInterface.jl package.
• Kratos Multiphysics through the experimental MGISApplication
• An example using MGIS and the DUNE platform is available here.

Bindings

Existing bindings

The following bindings are available:

• c binding
• python binding: this binding also provide an interface to FEniCS which is discussed here along with a collection of commented demos
• fortran binding

Future bindings (contributors are welcomed)

The following bindings are under consideration:

• octave binding

Versions, branches

Branches

• the master branch follows the evolution of the master branch of the TFEL project
• the rliv-1.1 follows the evolution of the 3.3.x series of the TFEL project.
• the rliv-1.0 follows the evolution of the 3.2.x series of the TFEL project. Note that this branch is not compatible with TFEL-3.2.0.

Acknowledgement

This project uses code extracted from the following projects:

• https://github.com/bitwizeshift/string_view-standalone by Matthew Rodusek
• https://github.com/mpark/variant: by Michael Park
• https://github.com/progschj/ThreadPool by Jakob Progsch and Václav Zeman
• https://github.com/martinmoene/span-lite by Martin Moene

References