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International Journal for Multiscale Computational Engineering

Publication de 6  numéros par an

ISSN Imprimer: 1543-1649

ISSN En ligne: 1940-4352

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AN EFFICIENT GEOMETRIC RECONSTRUCTION OF MESOSCALE CONCRETE STRUCTURES ACCOUNTING FOR CONFINEMENT SCENARIOS

Volume 18, Numéro 1, 2020, pp. 129-139
DOI: 10.1615/IntJMultCompEng.2019030675
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RÉSUMÉ

An efficient numerical modeling of concrete composites requires both the definition of the correct geometrical reconstruction of samples and the development of a sound model for the service and ultimate loads. This work proposes a procedure (characterized by the adoption of laser scanner techniques combined with CAD, X-ray computed tomography, and a particle random disposition algorithm) for reproducing a finite element model of concrete at the mesoscale in terms of particle packing and representation of material heterogeneities, together with a nonlinear constitutive characterization developed in the framework of nonassociated plasticity coupled with damage. The approach is validated against a typical experiment of structural collapse of concrete samples subjected to uniaxial compression, where the cement paste fails under aggregates confinement.

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CITÉ PAR
  1. Mazzucco Gianluca, Pomaro Beatrice, Xotta Giovanna, Garbin Enrico, Salomoni Valentina, De Marchi Nico, Experimental and Numerical Characterization of Normal-Weight Concrete at the Mesoscale, Journal of Materials in Civil Engineering, 34, 7, 2022. Crossref

  2. Ma Jianjun, Chen Junjie, Chen Wanxiang, Huang Linchong, A coupled thermal-elastic-plastic-damage model for concrete subjected to dynamic loading, International Journal of Plasticity, 153, 2022. Crossref

  3. Park Taehyo, Ahmed Bilal, Voyiadjis George Z, A review of continuum damage and plasticity in concrete: Part I – Theoretical framework, International Journal of Damage Mechanics, 31, 6, 2022. Crossref

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