Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

Awesome Lists | Featured Topics | Projects

https://github.com/getfem/getfem

Mirror of GetFEM repository
https://github.com/getfem/getfem

fem finite-element-analysis finite-element-methods gmsh hacktoberfest hacktoberfest2020 matlab mechanical-engineering octave python science scientific-computing scilab simulation vtk

Last synced: 3 days ago
JSON representation

Mirror of GetFEM repository

Awesome Lists containing this project

README 

        
GetFEM is an open source library based on collaborative development.

It aims to offer the most flexible framework for solving potentially coupled

systems of linear and nonlinear partial differential equations with the finite

element method. GetFEM is interfaced

with some script languages (Python, Octave, Scilab and Matlab) so that almost

all of the functionalities can be used just writing scripts. It works in

arbitrary dimension and allow to couple 1D, 2D and 3D problems. The strong

points of GetFEM can be summarized as follows:



  A weak form language (in terms of operators) that allows to translate quite

  arbitrary weak formulations. A symbolic derivation that allows to

  automatically obtain the tangent system for nonlinear problems. A compilation

  of assembly terms into optimized basic instructions.



  A model description that gather the variables, data and terms of a problem

  and some predefined bricks representing classical models : elasticity in

  small and large deformations, Helmholtz problem, scalar elliptic problem,

  Dirichlet, contact and Neumann boundary conditions, incompressibility

  constraint, ...



  A complete separation between geometric transformation, finite element

  method, integration methods and partial differential term description, which

  allows to easily switch from a method to another.



  A large set of predefined methods :

  isoparametric/subparametric/overparametric elements, Pk on simplices of

  arbitrary degree and dimension, Qk on parallelepipeds, pyramidal elements,

  P1, P2 with bubble functions, Hermite elements, Argyris element, HCT and FVS,

  elements with hierarchical basis (for multigrid methods for instance),

  discontinuous Pk and Qk, vector elements (RT0, Nedelec) ...



  A large set of predefined integration methods.

  Structural mechanics terms (elasticity, contact with friction, plasticity ...)

  Level-set and finite element cut by one or several level-set (Xfem)

  

  Computation of terms between two meshes with an arbitrary transformation:

  this is a very powerful tool of the generic assembly that allows to use a

  parameterized transformation. The derivative of the transformation with

  respect to the potential dependance in the variables is taken into account.

  Possible use : contact problems, fluid-structure interaction, special

  boundary conditions ...



  Post-processing directly with Scilab, Octave or Matlab interfaces or with

  the export of vtk or gmsh files. Many possibility to interpolate arbitrary

  quantities, make slices, projections ...



GetFEM can be used to construct very generic finite element codes, where

finite element methods, integration methods and the dimension of the problem

are the parameters that can be changed very easily. This allows a wide range

of experiments. Many examples and demos are provided.



GetFEM has only an experimental meshing procedure (and produces regular meshes).

It is therefore often necessary to import meshes. The formats currently

supported are GID, GMSH, EMC2 and ANSYS. 



Please read INSTALL and see the site https://getfem.org/