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Mesoscale finite element prediction of concrete failure
Shahbeyk, S ; Sharif University of Technology
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- Type of Document: Article
- DOI: 10.1016/j.commatsci.2011.01.044
- Abstract:
- The present paper studies the failure of concrete from the mesoscopic point of view. Biphasic cubic concrete samples containing spherical aggregates embedded in a homogenized mortar have been simulated using standard finite element method. Linear elasticity and damage-plasticity hypotheses are considered for the aggregates and mortar, respectively. Various triaxial loading conditions are assumed for each sample to generate adequate discrete failure points within the stress space. In the next step, the approximated failure surfaces of specimens are constructed using the Delaunay triangulation technique. The effects of mesostructural features such as aggregate grading curve, aggregate volumetric share, and more importantly the controlling parameters of mortars damage-plasticity constitutive model have been investigated. Finally, the failure modes of some selected samples have been reported and discussed
- Keywords:
- Concrete ; Failure surface ; Finite element ; Plastic-damage ; Aggregate grading ; Biphasic ; Concrete failure ; Concrete samples ; Controlling parameters ; Delaunay triangulation ; Failure points ; Finite-element predictions ; Linear elasticity ; Mesoscale ; Mesoscopics ; Spherical aggregates ; Standard finite element ; Stress space ; Triaxial loading ; Concrete aggregates ; Elasticity ; Finite element method ; Mortar ; Plasticity ; Stress analysis ; Failure analysis
- Source: Computational Materials Science ; Volume 50, Issue 7 , 2011 , Pages 1973-1990 ; 09270256 (ISSN)
- URL: http://www.sciencedirect.com/science/article/pii/S0927025611000681