La modélisation du comportement mécanique et de la rupture de milieux granulaires avec cohésion est réalisée sur un milieu modèle constitué de cylindres d'aluminium et de joints de colle jouant le rôle de points de cohésion. Le comportement mécanique du point de cohésion est étudié expérimentalement par des essais de traction, compression, cisaillement et application d'un couple. Les résultats sont introduits dans un code de calcul basé sur une méthode d'éléments discrets étendue au cas cohésif. La validation porte sur des essais de compression d'échantillons macroscopiques. La concordance est bonne entre simulation et expérience au niveau du comportement mécanique et des faciès de rupture.
The modelling of mechanical behaviour and rupture of cohesive granular media is carried out on a model medium made of aluminium cylinders and cohesive bonds playing the role of cohesion points. The mechanical behaviour of the cohesion point is studied under different loading situations (compression, traction, shearing, torque). The results are introduced into a code, which is based on a discrete element method extended to the cohesive case. The validation is achieved with compression tests of macroscopic samples. We notice a good correlation between simulation and experiment on the mechanical behaviour, on the appearance of fractures and their propagation.
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Keywords: granular media, cohesion, mechanical behaviour, rupture, computational solid mechanics, experimental validation
Jean-Yves Delenne 1 ; Moulay Saı̈d el Youssoufi 1 ; Jean-Claude Bénet 1
@article{CRMECA_2002__330_7_475_0,
author = {Jean-Yves Delenne and Moulay Sa{\i}\ensuremath{\ddot{}}d el Youssoufi and Jean-Claude B\'enet},
title = {Comportement m\'ecanique et rupture de milieux granulaires coh\'esifs},
journal = {Comptes Rendus. M\'ecanique},
pages = {475--482},
publisher = {Elsevier},
volume = {330},
number = {7},
year = {2002},
doi = {10.1016/S1631-0721(02)01484-5},
language = {fr},
}
TY - JOUR AU - Jean-Yves Delenne AU - Moulay Saı̈d el Youssoufi AU - Jean-Claude Bénet TI - Comportement mécanique et rupture de milieux granulaires cohésifs JO - Comptes Rendus. Mécanique PY - 2002 SP - 475 EP - 482 VL - 330 IS - 7 PB - Elsevier DO - 10.1016/S1631-0721(02)01484-5 LA - fr ID - CRMECA_2002__330_7_475_0 ER -
Jean-Yves Delenne; Moulay Saı̈d el Youssoufi; Jean-Claude Bénet. Comportement mécanique et rupture de milieux granulaires cohésifs. Comptes Rendus. Mécanique, Volume 330 (2002) no. 7, pp. 475-482. doi : 10.1016/S1631-0721(02)01484-5. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/S1631-0721(02)01484-5/
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