5. Features and verification

The law of behavior is inseparable from the D_ PLAN_GRAD_SIGM modeling. We can therefore only do plane modeling. The description of the parameters as well as the identification tips are given in section 4.4.

The law of behavior ENDO_HETEROGENE as well as the D_ PLAN_GRAD_SIGM modeling are verified by the following test cases:

SSNV147	Modeling crack initiation with the ENDO_HETEROGENE model	[V6.03.147]
SSNV148	Calculation of the stress intensity factor by the regularization of stresses with ENDO_HETEROGENE	[V6.03.148]

Note:

In parallel computing, when a calculation is performed on several processors with law ENDO_HETEROGENE, nothing guarantees the uniqueness of the solution because of the boot thresholds generated randomly. It is possible to have a machine sensitivity of the order of 1.E -3%. In some cases, there may be numerical non-convergence problems. That is why it is advisable to deactivate data distribution with AFFE_MODELE/DISTRIBUTION =” CENTRALISE “.