Summary of results
======================

The code_aster operator aimed at post-processing the rate of energy restoration in fracture mechanics used in this test case gives good results.

Out of the 6 models, the maximum relative difference encountered is :math:`\mathrm{4,16}`% for the C model.

**Notes:**

*The coefficient values* :math:`{K}_{I}` *and* :math:`{K}_{\mathit{II}}` *obtained are excellent in the case where the sliding modules are equal, and when the branch lengths are equal.*

*In all cases treated, the integration rings for the calculation of* :math:`G` *and* :math:`K` *, are confined to a single material. As there is doubt about the accuracy of the reference results, we must refer to the original publication of ISIDA NOGHUCHI before making a final judgment on the precision of the results obtained by finite elements.*