ASR; Concrete; damage; prediction; modelling; energy minimisation
Résumé :
[en] We present a new method to model fracture of concrete based on energy minimisation. The concrete is considered on the mesoscale as composite consisting of cement paste, aggregates and micro pores. In this first step, the alkali-silica reaction is taken into account through damage mechanics though the process is more complex involving thermo-hygro-chemo-mechanical reaction. We use a non-local damage model that ensures the well-posedness of the boundary value problem (BVP). In contrast to existing methods, the interactions between degrees of freedom evolve with the damage evolutions. Numerical results are compared to analytical and experimental results and show good agreement.
Disciplines :
Ingénierie, informatique & technologie: Multidisciplinaire, généralités & autres
Auteur, co-auteur :
Dunant, Cyrille F.; Department of civil engineering, University of Toronto, Galbraith building, Toronto M5S 1A4, Canada
BORDAS, Stéphane ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Kerfriden, Pierre; Laboratory of Construction Materials, EPFL, Lausanne, Swaziland
Scrivener, Karen L.; Laboratory of Construction Materials, EPFL, Lausanne, Swaziland
Rabczuk, Timon; Institute of Structural Mechanics, Chair of Computational Mechanics, Bauhaus University Weimar, Weimar 99423, Germany
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
An Algorithm to compute damage from load in composites
Date de publication/diffusion :
2011
Titre du périodique :
Frontiers of Architecture and Civil Engineering in China
