|
Whatever the mesh software used, it is necessary to plan, as soon as the mesh is created, to name the topological areas that will be used in the calculation to assign elementary characteristics, boundary conditions, boundary conditions, loads, materials, etc.
Indeed, although it is possible to use node and mesh numbers directly in the command file, it is preferable to use named entities (node groups, mesh groups). This makes it possible to have a command file independent of the degree of refinement of the mesh, and of a possible renumbering of nodes or elements.
In practice, these entities are groups:
groups of nodes (possibly containing a single node, such as the points \(A\), \(B\), \(C\), \(D\) in the example), groups of meshes corresponding to sub-domains of the mesh, or else meshes used to apply the loads: here for example, the group of mesh LDAcontient line cells (skin elements) that will be used to apply pressure.
The simple script for generating geometry (a rectangle) and mesh can be read in the file forma00.datg.
|