B modeling
==============

Validation of joint :math:`\mathrm{3D}` with the JOINT_MECA_RUPT law


Characteristics of modeling
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3D modeling for the elastic element.

3D modeling_ JOINT for the joint element


Characteristics of the mesh
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Number of knots: 12

The elastic element is a HEXA8.

The joint element is a degenerate HEXA8 (knots combined).


Tested sizes and results
-------------------------------

**Modes** :math:`I` **and** :math:`\mathrm{II}`

Identical to modeling A.

**Fashion** :math:`\mathrm{III}`

The joint is opened in :math:`I` mode until partial damage occurs, then it is stressed in :math:`\mathrm{III}` mode. Tangential stiffness slopes are tested at two values of normal apertures.