.. _R5.04.04:

**r5.04.04** Nonlocal modeling with nodal damage gradients GVNO
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**Summary**

We present here the nonlocal nodal damage gradient modeling entitled GVNO in Code_Aster, resulting from the thesis work of J. Beaurain. This modeling can be seen as a simplification of non-local modeling with an internal variable gradient GRAD_VARI.

Non-local models of type GVNO are available in 3D (3D_ GVNO), axisymmetric (AXIS_GVNO), and plane deformations (D_ PLAN_GVNO).

The use of GVNO is very simple, since all you have to do is specify the X_ GVNO modeling in AFFE_MODELE, specify a characteristic length under the keyword NON_LOCAL in DEFI_MATERIAU, and check that the law of behavior you want to use is indeed available in a non-local version.

The writing and numerical processing of this model are presented.




.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Rappel_sur_la_th_orie_des_mod_les___gradient
    Choix_des__l_ments_finis
    M_thodes_de_r_solution
    Mod_lisations_disponibles
    Lois_de_comportement_disponibles_avec_les_mod_lisations_GVNO
    Conseils_Proc_dure_pour_la_mise_en_oeuvre_d_une_nouvelle_loi_de_comportement___gradients_d_endommagement
    Conseils_sur_l_utilisation_de_GVNO
    Fonctionnalit_s_et_v_rifications
    Bibliographie
    Description_des_versions_du_document