Classical and sequential limit analysis revisited

چکیده مقاله :
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.

توضیحات تکمیلی :

مقاله ISI انگلیسی اصلی
سال انتشار:2018
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 14 صفحه


نویسندگان/توضیحات : مقاله ISI سال انتشار2018 \ Jean-Baptiste Leblond a, ∗ , Djimédo Kondo a , Léo Morin b , Almahdi Remmal a,c
تاریخ ارسال : 1397/10/30
تعداد بازدید : 386
کلمات کلیدی : Classical limit analysis Sequential limit analysis Hill’s approach Drucker’s approach Elasticity Strain hardening Large displacements and strains
تعداد صفحات : 14
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