A phase field method to simulate crack nucleation and propagation in strongly heterogeneous materials from direct imaging of their microstructure

“…For more details and practical implementation aspects, the interested reader may refer to Miehe et al (2010); Nguyen et al (2015). The phase field method is based on a regularized formulation of a sharp crack description.…”

Section: Phase Field Modeling Of Stress Corrosion Crackingmentioning

confidence: 99%

A phase field method for modeling stress corrosion crack propagation in a nickel base alloy

Nguyen

Bolivar

Réthoré

et al. 2017

International Journal of Solids and Structures

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“…For more details and practical implementation aspects, the interested reader can refer to [14,20]. The phase field method is based on a regularized formulation of a sharp crack description.…”

Section: Phase Field Modelling Of Quasi-brittle Microcrackingmentioning

confidence: 99%

Large-scale simulations of quasi-brittle microcracking in realistic highly heterogeneous microstructures obtained from micro CT imaging

Nguyen

Yvonnet

Bornert

et al. 2017

Extreme Mechanics Letters

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Large-scale simulations of quasi-brittle microcracking in realistic highly heterogeneous microstructures obtained from micro CT imaging. Extreme mechanics letters, Elsevier, 2017Elsevier, , 17, pp.50-55. 10.1016Elsevier, /j.eml.2017 Large-scale simulations of quasi-brittle microcracking in realistic highly heterogeneous microstructures obtained from micro CT imaging AbstractWe present large-scale simulations of microcracking initiation and propagation using a continuum mechanics description in realistic, voxel-based microstructures of heterogeneous quasi-brittle materials obtained from CT imaging techniques. The phase field method is used to describe the evolution of the complex microcracks networks in both uniaxial tension and compression of a sub-volume of a lightweight concrete, where all pores and sand grains are explicitly described. A description of the meshing techniques for such complex voxel-based models is provided, and a convergence study of the tensile failure strength with respect to the sample size is carried out. Such large-scale simulations have high potential to be used either within recent concurrent multiscale methods or in approaches combining in-situ experiments with 3D imaging techniques and simulations for inverse identification of microstructural damage models.

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“…They possess a sound mathematical background and a variational structure. Recent attempts to study fracture in cementitious materials using phase-field modeling are reported in [35,36], while in [7] a phase-field model of fracture is coupled with diffusion, with special focus on chloride diffusion in cement paste.…”

Section: Introductionmentioning

confidence: 99%

Towards multiscale modeling of the interaction between transport and fracture in concrete

2016

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Transport, fracture and their interaction in concrete are complex phenomena of great practical relevance for the durability of civil engineering structures. Due to the heterogeneous nature of the materials, encompassing a wide range of length scales, multiscale approaches are essential. In this paper, we outline some recent research results and open issues in this field. First, we present a microscale model which aims at simulating chloride diffusion and binding in cement. Then, we outline a mesoscale model addressing coupling between cracking and diffusion. Finally, we discuss open issues in the acquisition of the mesoscale geometry from X-ray computed tomography techniques.

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A phase field method to simulate crack nucleation and propagation in strongly heterogeneous materials from direct imaging of their microstructure

Cited by 221 publications

References 58 publications

A phase field method for modeling stress corrosion crack propagation in a nickel base alloy

A phase field method for modeling stress corrosion crack propagation in a nickel base alloy

Large-scale simulations of quasi-brittle microcracking in realistic highly heterogeneous microstructures obtained from micro CT imaging

Towards multiscale modeling of the interaction between transport and fracture in concrete

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