1. Using GMSH

GMSH is a free or adjusted meshing tool that integrates a modeler and post-processing features. The modeler, easy to use, makes it possible to prepare the mesh of structures by geometric constructions (creation of lines, surfaces, translations/rotations, extrusions…).

The structure model can be built interactively (with the mouse) or by a command file.

The documentation for GMSH is available at this address: https://gmsh.info.

The description of the geometry of the structure is contained in a .geo file, the mesh produced is saved with the extension.msh; this file will be converted by the PRE_GMSH command to the Aster format.