3D meso-scale fracture modelling and validation of concrete based on in-situ X-ray Computed Tomography images using damage plasticity model

Y. Huang, Zhenjun Yang, Ren W., G. Liu, C. Zhang

    Research output: Contribution to journalArticle

    83 Citations (Scopus)

    Abstract

    Three-dimensional (3D) meso-scale finite element models of concrete based on in-situ X-ray Computed Tomography (XCT) images are developed and validated in this study. The micro-scale images from a Brazilian-like XCT test are first compressed and then transformed into manageable meso-scale 3D meshes using a voxel hexahedron meshing technique with a stacking algorithm. The continuum damage plasticity model is used to simulate complicated damage and fracture behaviour. Excellent qualitative agreement is found between modelling and the XCT compression test in terms of damage evolution and fracture process on both the surface and interior of the specimen. 3D uniaxial tension tests are also simulated, and it is found that the distribution of voids have profound influences on the strength and crack patterns. The image-based 3D models are proved very promising in elucidating fundamental mechanisms of complicated crack initiation and propagation behaviour that 2D studies are incapable of modelling.
    Original languageEnglish
    Pages (from-to)340-352
    JournalInternational Journal of Solids and Structures
    Volume67-68
    Early online date9 May 2015
    DOIs
    Publication statusPublished - 15 Aug 2015

    Fingerprint

    X-ray Tomography
    Computed Tomography
    plastic properties
    Plasticity
    Tomography
    Damage
    tomography
    Concretes
    damage
    X rays
    Hexahedron
    Modeling
    x rays
    Crack Initiation
    compression tests
    crack initiation
    Meshing
    Stacking
    Voxel
    Crack Propagation

    Bibliographical note

    The full text is not available on the repository at this time.

    Keywords

    • Mesoscale modelling of concrete
    • In-situ X-ray Computed Tomography
    • Voxel hexahedron meshing
    • 3D image based modelling
    • Damage plasticity model

    Cite this

    3D meso-scale fracture modelling and validation of concrete based on in-situ X-ray Computed Tomography images using damage plasticity model. / Huang, Y.; Yang, Zhenjun; W., Ren; Liu, G.; Zhang, C.

    In: International Journal of Solids and Structures, Vol. 67-68, 15.08.2015, p. 340-352.

    Research output: Contribution to journalArticle

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