A limit analysis approach based on Cosserat continuum for the evaluation of the in-plane strength of discrete media: application to masonry - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Journal of Mechanics - A/Solids Année : 2017

A limit analysis approach based on Cosserat continuum for the evaluation of the in-plane strength of discrete media: application to masonry

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Michele Godio
  • Fonction : Auteur
Ioannis Stefanou
Karam Sab
Jean Sulem

Résumé

In the frame of Cosserat continuum theory, an upscaling procedure for the assessment of the in-plane strength domain of discrete media is developed. The procedure is the extension to the Cosserat continuum of a procedure initially formulated for the Cauchy continuum, based on the kinematic approach of limit analysis and the classical homogenisation theory. The extension to the Cosserat continuum is made in order to take into account the effect of particles' rotation on the strength of the discrete medium. The procedure is illustrated with regard to periodic assemblies of blocks in contact and is then generalised to the whole class of discrete periodic media with particles of the same type. The case of masonry is considered as an application. Strength criteria of columns and walls are formulated in terms of non-symmetric stresses and in-plane couples. The procedure allows to show how the in-plane strength of the medium is reduced as a result of particles' rotation.
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Dates et versions

hal-01545629 , version 1 (22-06-2017)

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Michele Godio, Ioannis Stefanou, Karam Sab, Jean Sulem, Seddik Sakji. A limit analysis approach based on Cosserat continuum for the evaluation of the in-plane strength of discrete media: application to masonry. European Journal of Mechanics - A/Solids, 2017, ⟨10.1016/j.euromechsol.2017.06.011⟩. ⟨hal-01545629⟩
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