%0 Journal Article %T Elastoplastic buckling and collapse of spherical shells under combined loadings %+ École des Mines de Douai (Mines Douai EMD) %+ CEntre Technique des Industries Mécaniques - Cetim (FRANCE) %+ Institut de Recherche Dupuy de Lôme (IRDL) %A Tall, Mamadou %A Hariri, Said %A Le Grognec, Philippe %A Simonet, Yves %< avec comité de lecture %@ 0263-8231 %J Thin-Walled Structures %I Elsevier %V 123 %P 114-125 %8 2018 %D 2018 %R 10.1016/j.tws.2017.10.041 %K Spherical shells %K Buckling %K Post-buckling %K Elastoplasticity %K External pressure %K Torsion %K Interaction curves %K Geometric imperfections %Z Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]Journal articles %X In this paper, the buckling behavior of a complete spherical shell under external pressure and of a half-sphere under torsion are first investigated. Several parametric studies are performed, which rely on the European Recommendations framework (ECCS text), so as to identify the different key parameters of the corresponding buckling capacity curves and lead up to both a qualitative and quantitative discussion about the imperfection sensitivity of such structures under each fundamental load. The related results allow us to completely describe the buckling behavior of a spherical shell under combined external pressure and circumferential shear by means of interactive buckling curves, without the need of many supplementary computations for any arbitrary combined loading case. %G English %2 https://ensta-bretagne.hal.science/hal-01704544/document %2 https://ensta-bretagne.hal.science/hal-01704544/file/tws-auteur.pdf %L hal-01704544 %U https://ensta-bretagne.hal.science/hal-01704544 %~ UNIV-BREST %~ INSTITUT-TELECOM %~ ENSTA-BRETAGNE %~ CNRS %~ UNIV-UBS %~ EM-DOUAI %~ UBS %~ ENIB %~ IRDL %~ INSTITUTS-TELECOM %~ ENSTA-BRETAGNE-MECA %~ TEST-HALCNRS %~ ENSTA-BRETAGNE-PTR2-IRDL %~ IMT-NORD-EUROPE