Classical and sequential limit analysis revisited - Archive ouverte HAL Access content directly
Journal Articles Comptes Rendus Mécanique Year : 2018

Classical and sequential limit analysis revisited

Abstract

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.
Fichier principal
Vignette du fichier
1-s2.0-S1631072117302516-main.pdf (459.9 Ko) Télécharger le fichier
Origin : Publication funded by an institution
Loading...

Dates and versions

hal-01768417 , version 1 (17-04-2018)

Licence

Attribution

Identifiers

Cite

Jean-Baptiste Leblond, Djimedo Kondo, Léo Morin, Almahdi Remmal. Classical and sequential limit analysis revisited. Comptes Rendus Mécanique, 2018, 346 (4), pp.336-349. ⟨10.1016/j.crme.2017.12.015⟩. ⟨hal-01768417⟩
142 View
116 Download

Altmetric

Share

Gmail Facebook X LinkedIn More