1. Vocabulary IDEAS

“geometry”

set of geometric entities on which the mesh is based. They can be curves (“curve”), surfaces (“mesh area”), volumes (“meshvolume”).

“curve”

linear geometric entity that can be composed of sub-entities, segments, circular arcs, options. The meshes that rely on these sub-entities are segments with 2 or 3 nodes.

“mesh area”

surface geometric entity bordered by “curves” on which the surface cells are based: triangles with 3 or 6 knots or quadrangles with 4 or 8 knots.

“mesh volume”

volume geometric entity bordered by “meshareas”. The volume cells based on these sub-entities are hexahedra with 8 or 20 knots, pentahedra with 6 or 15 knots, or tetrahedra with 4 or 10 knots.

“group”

any grouping (chosen by the user) of geometric entities, nodes or meshes; the user gives it a name.

“universal file”

The formatted file produced by IDEAS is the interface data file. It contains all the mesh (nodes and meshes), geometric entities, geometric entities, groups, and associations - geometric entities - mesh.

“geometric entity - mesh” association

list of nodes or meshes based on a given geometric entity.

• for each “curve”, the nodes that compose it,

• for each “mesharea”:

• the nodes that compose it,

• in 2D the meshes that compose it.

• for each “meshvolume”:

• the knots and the stitches that make it up.

• the nodes that compose it,

• in 3D the meshes that compose it.