5. Summary of results

In the case where the analytical solution is known (non-variation in drying), this test case offers very satisfactory results with a difference of less than \(\text{0.02\%}\) for all calculation cases. The number of iterations for the plastic phase is generally of the order of ten; this is explained by the choice of the law of almost perfect plasticity, obtained with model VMIS_ISOT_LINE, with particular sets of parameters. In fact, this same model used without the creep/crack coupling, under the same loading conditions and with the same parameters, presents the same convergence difficulties.

Finally, in 3D and in C_ PLAN, we check that the 2 models that have been degenerated give almost similar results. On the other hand, in D_ PLAN, the model BETON_DOUBLE_DP is not equivalent to the model VMIS_ISOT_LINE because of the writing of the criterion which depends on the trace of the deformation tensor and is therefore not equivalent to the perfectly plastic model.