9. G modeling#
Validation of the joint \(\mathrm{2D}\) \(\text{HYME}\) with the law JOINT_MECA_RUPT
9.1. Characteristics of modeling#
Modeling in plane deformations D_ PLAN for the elastic element.
Plane modeling for the joint element (keyword PLAN_JOINT_HYME).
9.2. Characteristics of the mesh#
Number of knots: 13 (including 3 knots with degrees of pressure freedom)
The elastic element is a QUAD8.
The joint element is a degenerate QUAD8 (knots combined).
9.3. Tested sizes and results#
To test the hydraulic part, we impose a pressure \({p}_{\mathit{fluide}}=500\mathit{Pa}\) on the node \(\mathit{NS5}\) and we test the same value on the node \(\mathit{NS7}\).
We test the mechanics in pure \(I\) mode. The joint is opened up to partial damage [3] _ . \(U=\beta \times {\%}_{\mathit{el}}+(1-\beta )\times {\%}_{\mathit{max}}\) where \(\beta =0.2\). Then it goes into compression zone \(U=-{U}_{\mathit{el}}\). Finally, the joint is put into tension until complete damage \(U={U}_{\mathit{max}}\). We test the global response (the resultant of the nodal force, FN) of the system (joint and cube) in the local coordinate system. The reference values are obtained analytically taking into account the fluid pressure (see page 6).