7. Description of document versions

Version Aster	Author (s) Organization (s)	Description of changes
6.3	LAVERNE EDF -R&D/ AMA	Initial text
7.2	J. LAVERNE EDF -R&D/ AMA	Evolution of the joint element - addition of a second gauss point - addition of a 3rd internal variable: percentage of energy dissipated - Penalization of closure (contact). - Management: modification of criterion PRED_ELAS
8.4	J. LAVERNE EDF -R&D/ AMA	Penalization for initial stiffness addition of a 4th internal variable 4
9.5	J. LAVERNE EDF -R&D/ AMA	Addition of laws CZM_OUV_MIX and CZM_TAC_MIX
10.1	J. LAVERNE EDF -R&D/ AMA	Addition of law CZM_FAT_MIX
10.4	J. LAVERNE EDF -R&D/ AMA	Addition of law CZM_TRA_MIX, modification of the definition of the local coordinate system for IS with nautical angles (ANGL_REP) and more with Euler angles (ANGL_EULER).
11.3	Mr. David EDF -R&D/ AMA	Addition of law CZM_LAB_MIX and the keyword CINEMATIQUE
12.1	S. Michel-Ponnelle EDF -R&D/ AMA	Addition of law CZM_EXP_MIX