Summary of results
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The Willam test is a simple test to compare the influence of the description of the anisotropy of damage from law ENDO_ORTH_BETON on the response of the material compared to isotropic models. It also makes it possible to observe the response of the model when the load's own coordinate system rotates. It is thus noted on the values tested that the damage does not rotate in the same way as the deformation tensor. In addition, the angle of rotation of the damage tensor reaches a plateau when the damage is complete in one direction, which can be associated with the creation of a macro-crack.