1. Introduction#

The choice of modeling is made through the operator AFFE_MODELE of*Code_Aster*. For example, the user will write in their command file:

MOME = AFFE_MODELE (MAILLAGE = MAIL,

AFFE =_F (TOUT = 'OUI', MODELISATION = 'AXIS_JOINT_HMS',

PHENOMENE = “MECANIQUE”))

In order to be able to offer the user other models, we will describe in this document a methodology for introducing new modeling in*Code_Aster*.

Introducing modeling in*Code_Aster* requires asking the following questions:

  • In which phenomenon will I add my modeling?

  • What are the geometric and topological dimensions of finite elements?

  • What are the meshes concerned by this modeling?

  • What are the « main » elements and the edge elements?

  • What are the attributes that can be defined?

  • What calculations can be made with this modeling?

We will answer these questions in this document.

Other questions relating to finite elements are dealt with in other documents:

  • [D5.02.01] How do I introduce a new quantity or new components (CMP) into an existing quantity?

  • [D5.02.02] How do I introduce a new mesh type (mesh_type) or a new reference element (ELREFE)?

  • [D5.02.05] How do I introduce a new elementary calculation?