# publicsfepy/sfepy

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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 `========================================SfePy (Simple finite elements in Python)========================================A finite element analysis software based primarily on NumPy and SciPy.See the INSTALL file for installation instructions or refer to SfePydocumentation site [1].How to start------------SfePy uses so called "problem definition files" (also referred to as"input files" or "problem description files"") that describe the partialdifferential equations (PDEs), boundary conditions, function spaces andother ingredients of the finite element (FE) formulation of aPDE-related problem, see [1]. The PDEs are given in weak formulation asusual in the FE context, see [2], where each equation is composed of oneor more terms. To see which terms are available consult'doc/sfepy_manual.pdf', or see them online [3].In order to solve a problem, a problem description file has to becreated. There is also an interactive solution support for advancedusers [4].When starting to solve a new problem, it is best to have a look atexample problem definition files in the 'examples/' directory - copy theone that is similar to the problem at hand, and modify it. Two of theexamples are commented: 'examples/diffusion/poisson.py' and'examples/linear_elasticity/linear_elastic.py'.While a problem definition file describes a mathematical problem, it does notcontain a discretized solution domain (a FE mesh). The FE mesh must be providedin another file in one of the supported formats, notably the legacy VTK format[5]. SfePy does not provide meshing tools, but it can use a number of standardformats. The results are almost exclusively stored in legacy VTK files, orcustom HDF5 files. Many standard open-source tools can be used to display the VTKfiles, namely paraview [6], or mayavi [7]. The latter is supported directlywithin SfePy, either via the postproc.py script or the isfepy shell.Once an input file and a corresponding mesh file are prepared, thesolution of the problem can be attempted by the 'simple.py' script, seeExamples section in the INSTALL file.[1] http://docs.sfepy.org/[2] http://en.wikipedia.org/wiki/Weak_formulation[3] http://docs.sfepy.org/doc/terms_overview.html[4] http://docs.sfepy.org/doc/tutorial.html#interactive-example-linear-elasticity[5] http://www.vtk.org/pdf/file-formats.pdf[6] http://paraview.org/[7] http://code.enthought.com/projects/mayavi/Links----- - http://sfepy.org ... main SfePy development site (releases, mailing lists,                        wiki, issue tracking, downloads, examples - http://docs.sfepy.org ... documentation - http://github.com/sfepy/ ... master git repository - http://sfepy.kme.zcu.cz ... projects solved within SfePyLicense: New BSD License, see the LICENSE file.--Robert Cimrman and Contributors`
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