[Approche discrète de l'endommagement quasi-fragile : conditions sur l'ensemble de directions]
Cette Note poursuit le développement de l'approche discrète de l'endommagement anisotrope en précisant des conditions sur l'ensemble de directions fixes à utiliser. Trois conditions sont présentées, concernant la représentativité de toute configuration d'endommagement et en particulier des configurations isotrope et isotrope transverse. Ces conditions sont écrites aux ordres 2 et 4 en orientation du fait de la présence de ces deux types de termes dans le potentiel thermodynamique. Les résultats montrent que les conditions à l'ordre deux suffisent pour décrire une configuration de microfissures ouvertes, alors que les conditions d'ordre quatre sont nécessaires pour représenter une configuration de microfissures fermées.
The aim of this Note is to investigate the discrete approach of anisotropic damage by microcracking by specifying the choice of the set of fixed directions that are to be effectively employed. Three conditions are presented, concerning the description of any damage configuration, and in particular isotropic and transversely isotropic ones. These conditions are given at two different orders in orientation (order 2 and order 4), as both tensorial terms intervene in the thermodynamic potential. The results show that the second order conditions are sufficient to represent a configuration of open microcracks, whereas fourth order conditions are necessary to represent a configuration of closed ones.
Accepté le :
Publié le :
Mot clés : Endommagement, Endommagement anisotrope, Effet unilatéral, Approche discrète
Renaud Bargellini 1 ; Damien Halm 1 ; André Dragon 1
@article{CRMECA_2007__335_12_781_0, author = {Renaud Bargellini and Damien Halm and Andr\'e Dragon}, title = {Discrete approach for modelling quasi-brittle damage: conditions on the set of directions}, journal = {Comptes Rendus. M\'ecanique}, pages = {781--786}, publisher = {Elsevier}, volume = {335}, number = {12}, year = {2007}, doi = {10.1016/j.crme.2007.10.003}, language = {en}, }
TY - JOUR AU - Renaud Bargellini AU - Damien Halm AU - André Dragon TI - Discrete approach for modelling quasi-brittle damage: conditions on the set of directions JO - Comptes Rendus. Mécanique PY - 2007 SP - 781 EP - 786 VL - 335 IS - 12 PB - Elsevier DO - 10.1016/j.crme.2007.10.003 LA - en ID - CRMECA_2007__335_12_781_0 ER -
%0 Journal Article %A Renaud Bargellini %A Damien Halm %A André Dragon %T Discrete approach for modelling quasi-brittle damage: conditions on the set of directions %J Comptes Rendus. Mécanique %D 2007 %P 781-786 %V 335 %N 12 %I Elsevier %R 10.1016/j.crme.2007.10.003 %G en %F CRMECA_2007__335_12_781_0
Renaud Bargellini; Damien Halm; André Dragon. Discrete approach for modelling quasi-brittle damage: conditions on the set of directions. Comptes Rendus. Mécanique, Volume 335 (2007) no. 12, pp. 781-786. doi : 10.1016/j.crme.2007.10.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2007.10.003/
[1] Modelling of anisotropic damage by microcracks: Towards a discrete approach, Arch. Mech., Volume 58 (2006) no. 2, pp. 93-123
[2] A critical review of some damage models with unilateral effect, Mech. Res. Com., Volume 29 (2002), pp. 391-395
[3] Spurious energy dissipation/generation in stiffness recovery models for elastic degradation and damage, Int. J. Solids Struct., Volume 33 (1996) no. 20–22, pp. 2939-2957
[4] On the non-conservativeness of a class of anisotropic damage models with unilateral effects, C. R. Mécanique, Volume 334 (2006), pp. 414-418
[5] A model of anisotropic damage by mesocrack growth; unilateral effect, Int. J. Damage Mech., Volume 5 (1996), pp. 384-402
[6] Microplane model for progressive fracture of concrete and rock, J. Eng. Mech., Volume 114 (1988), pp. 1672-1702
[7] Lois de comportement anisotrope des milieux continus, J. Mécanique, Volume 17 (1978), pp. 153-190
[8] Conewise linear elastic materials, J. Elasticity, Volume 37 (1995), pp. 1-38
[9] Elastic solids with many cracks and related problems (J. Hutchinson; T. Wu, eds.), Adv. Appl. Mech., vol. 30, Academic Press, New York, 1994, pp. 259-445
[10] Isotropy of strain energy functions which depend only on a finite number of directional strain measures, J. Appl. Mech. ASME, Volume 61 (1994), pp. 284-289
[11] Connexions between the moduli for anisotropic elastic materials, J. Elasticity, Volume 2 (1972) no. 2, pp. 135-141
Cité par Sources :
Commentaires - Politique