Utilities for importing FEM meshes to Mathematica. Currently supported file formats:
Download ImportMesh.zip file from the releases page and extract it to the folder that you get by evaluating
SystemOpen@FileNameJoin[{$UserBaseDirectory, "Applications"}] in Mathematica. Then load the package by evaluating Get["ImportMesh`"].
Alternately run Get["https://raw.githubusercontent.com/c3m-labs/ImportMesh/master/ImportMesh.wl"]
The only (currently) public function is ImportMesh. It creates ElementMesh object from a text file:
mesh=ImportMesh["path/to/your_mesh_file"];
mesh["Wireframe"]
There are also functions in the "`Package`" subcontext that implement ImportMesh.
Similarly, support is added for Import registration, so it is possible to import a file as an "ElementMesh" and get it to work as expected.
For example:
meshExample =
URLDownload@
"https://raw.githubusercontent.com/c3m-labs/ImportMesh/master/Tests/Gmsh/box_H1.msh";
Import[meshExample, "ElementMesh"]["Wireframe"]
Support is also provided for import as a string if the format type of the file is known:
inpText =
ReadString@
"https://raw.githubusercontent.com/c3m-labs/ImportMesh/master/Tests/Abaqus/nle1xf4f.inp";
ImportString[inpText, "AbaqusMesh"]["Wireframe"]
This also allows for loading of assets off the web:
Import[
"https://raw.githubusercontent.com/c3m-labs/ImportMesh/master/Tests/Elfen/disc_Q1.mes",
"ElfenMesh"
]["Wireframe"]
Specific elements may also be extracted when the format is known:
ImportString[inpText, {"AbaqusMesh", "Elements"}]
{"Mesh", "MeshNodes", "MeshElements"}ImportString[inpText, {"AbaqusMesh", "MeshNodes"}]
{{0., 1.}, {0., 1.4375}, {0., 1.875}, {0., 2.3125}, {0.,
2.75}, {0.659994, 0.932966}, {0.742355, 1.34813}, {0.824716,
1.7633}, {0.907077, 2.17846}, {0.989438, 2.59363}, {1.165,
0.81283}, {1.3195, 1.18442}, {1.474, 1.55602}, {1.6285,
1.92761}, {1.783, 2.2992}, {1.53326, 0.649529}, {1.74826,
0.957066}, {1.96326, 1.2646}, {2.17826, 1.57214}, {2.39326,
1.87968}, {1.78302, 0.453}, {2.04547, 0.67675}, {2.30791,
0.9005}, {2.57036, 1.12425}, {2.8328, 1.348}, {1.93252,
0.233178}, {2.22794, 0.354165}, {2.52335, 0.475152}, {2.81877,
0.596139}, {3.11419, 0.717125}, {2., 0.}, {2.3125, 0.}, {2.625,
0.}, {2.9375, 0.}, {3.25, 0.}}
More information on how to manipulate and visualize ElementMesh objects is available in official documentation
Contributions to ImportMesh package are very welcome. You can open a new issue with bug report or feature request.
These are some things you can help with:
- Test package with different mesh files
- Provide sample mesh files from other, not yet supported, software
- Propose code improvements (style or performance)