[Une méthode de contrôle basée sur la dissipation pour la modélisation multi-échelles des matériaux quasi-fragiles]
Des schémas multi-échelles basés sur des principes d'homogénéisation numériques sont actuellement développés pour la simulation de comportements matériels complexes. L'utilisation de techniques d'homogénéisation sur des éléments de volume représentatifs de tailles finies en présence d'endommagement quasi-fragile peut causer l'apparition d'effets de snap-back dans la réponse matérielle macroscopique. Une méthode est proposée permettant d'introduire ce type de réponse dans un schéma multi-échelles, basée sur le contrôle de la dissipation à l'échelle mésoscopique.
Multi-scale models based on computational homogenisation are nowadays developed for the simulation of complex material behaviour. The use of homogenisation techniques on finite-sized representative volume elements in the presence of quasi-brittle damage may lead to the presence of snap-backs in the macroscopic material response. A methodology to simulate this type of response in the multi-scale technique is proposed, based on the control of the dissipation at the mesoscopic scale.
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Mots-clés : Mécanique des solides numérique, Modélisation multi-échelles, Localisation, Snap-back, Méthode de continuation, Contrôle par dissipation
Thierry J. Massart 1 ; Ron H.J. Peerlings 2 ; Marc G.D. Geers 2
@article{CRMECA_2005__333_7_521_0, author = {Thierry J. Massart and Ron H.J. Peerlings and Marc G.D. Geers}, title = {A dissipation-based control method for the multi-scale modelling of quasi-brittle materials}, journal = {Comptes Rendus. M\'ecanique}, pages = {521--527}, publisher = {Elsevier}, volume = {333}, number = {7}, year = {2005}, doi = {10.1016/j.crme.2005.05.003}, language = {en}, }
TY - JOUR AU - Thierry J. Massart AU - Ron H.J. Peerlings AU - Marc G.D. Geers TI - A dissipation-based control method for the multi-scale modelling of quasi-brittle materials JO - Comptes Rendus. Mécanique PY - 2005 SP - 521 EP - 527 VL - 333 IS - 7 PB - Elsevier DO - 10.1016/j.crme.2005.05.003 LA - en ID - CRMECA_2005__333_7_521_0 ER -
%0 Journal Article %A Thierry J. Massart %A Ron H.J. Peerlings %A Marc G.D. Geers %T A dissipation-based control method for the multi-scale modelling of quasi-brittle materials %J Comptes Rendus. Mécanique %D 2005 %P 521-527 %V 333 %N 7 %I Elsevier %R 10.1016/j.crme.2005.05.003 %G en %F CRMECA_2005__333_7_521_0
Thierry J. Massart; Ron H.J. Peerlings; Marc G.D. Geers. A dissipation-based control method for the multi-scale modelling of quasi-brittle materials. Comptes Rendus. Mécanique, Volume 333 (2005) no. 7, pp. 521-527. doi : 10.1016/j.crme.2005.05.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2005.05.003/
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