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- W2023793539 abstract "Le comportement au voilement d'éléments poutres en acier est important à comprendre dans le dimensionnement des ossatures métalliques soumises à un séisme. Le radoucissement induit au niveau de la loi moment-courbure conduit à un problème d'évolution élastoplastique mal posé. Un modèle de plasticité au gradient est proposé pour contrôler la localisation. La classification des sections classiquement proposée par les règlements en est remise en cause. Une classification par éléments serait probablement plus adaptée. Pour citer cet article : N. Challamel, C. R. Mecanique 331 (2003). Local buckling of steel structural members has to be well understood in order to design accurately steel structures in seismic areas. Induced softening moment-curvature law leads to a well known ill-posedness elastoplastic evolution problem. Localization is chosen to be controlled with a gradient plasticity approach. The concept of cross-section behavioural classes, classically adopted in modern rule design, should be substituted by the concept of member behavioural classes. To cite this article: N. Challamel, C. R. Mecanique 331 (2003)." @default.
- W2023793539 created "2016-06-24" @default.
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- W2023793539 date "2003-09-01" @default.
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- W2023793539 title "Une approche de plasticité au gradient en construction métallique" @default.
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- W2023793539 doi "https://doi.org/10.1016/s1631-0721(03)00141-4" @default.
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