Classical limit analysis applies to ideal plastic materials, and within a linearized geometrical framework implying small displacements and strains. Sequential limit analysis was proposed as a heuristic extension to materials exhibiting strain hardening, and within a fully general geometrical framework involving large displacements and strains. The purpose of this paper is to study and clearly state the precise conditions permitting such an extension. This is done by comparing the evolution equations of the full elastic–plastic problem, the equations of classical limit analysis, and those of sequential limit analysis. The main conclusion is that, whereas classical limit analysis applies to materials exhibiting elasticity – in the absence of hardening and within a linearized geometrical framework –, sequential limit analysis, to be applicable, strictly prohibits the presence of elasticity – although it tolerates strain hardening and large displacements and strains. For a given mechanical situation, the relevance of sequential limit analysis therefore essentially depends upon the importance of the elastic–plastic coupling in the specific case considered.
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Jean-Baptiste Leblond 1; Djimédo Kondo 1; Léo Morin 2; Almahdi Remmal 1, 3
@article{CRMECA_2018__346_4_336_0, author = {Jean-Baptiste Leblond and Djim\'edo Kondo and L\'eo Morin and Almahdi Remmal}, title = {Classical and sequential limit analysis revisited}, journal = {Comptes Rendus. M\'ecanique}, pages = {336--349}, publisher = {Elsevier}, volume = {346}, number = {4}, year = {2018}, doi = {10.1016/j.crme.2017.12.015}, language = {en}, }
TY - JOUR AU - Jean-Baptiste Leblond AU - Djimédo Kondo AU - Léo Morin AU - Almahdi Remmal TI - Classical and sequential limit analysis revisited JO - Comptes Rendus. Mécanique PY - 2018 SP - 336 EP - 349 VL - 346 IS - 4 PB - Elsevier DO - 10.1016/j.crme.2017.12.015 LA - en ID - CRMECA_2018__346_4_336_0 ER -
Jean-Baptiste Leblond; Djimédo Kondo; Léo Morin; Almahdi Remmal. Classical and sequential limit analysis revisited. Comptes Rendus. Mécanique, Volume 346 (2018) no. 4, pp. 336-349. doi : 10.1016/j.crme.2017.12.015. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2017.12.015/
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