Three-dimensional heterogeneous fracture simulation of asphalt mixture under uniaxial tension with cohesive crack model

Yin, Anyi; Yang, Xinhua; Zhang, Chuanchuan; Zeng, Guowei; Yang, Zhenjun

doi:10.1016/j.conbuildmat.2014.11.065

Cited by 66 publications

(18 citation statements)

References 44 publications

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“…A number of studies on mesoscale modelling of concrete using a continuum approach can be found in the existing literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Relatively more realistic aggregate shapes, such as random polygon, have been achieved mainly in 2D (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Some more recent studies have focused on developing approaches which can generate and randomly pack polyhedron aggregates following a predefined grading curve [16][17][18]. However, a common challenge to most existing meso-structure models of concrete is a relatively low aggregate packing density and it is generally difficult to reach the aggregate volume ratio as in the real concrete specimens.…”

Section: Introductionmentioning

confidence: 99%

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3D mesoscale finite element modelling of concrete

Zhou

Song

2017

Computers & Structures

140

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Concrete is non-homogeneous and is composed of three main constituent phases from a mesoscopic viewpoint, namely aggregates, mortar matrix, and interface transition zone (ITZ).A mesoscale model with explicit representation of the three distinctive phases is needed for investigation into the damage processes underlying the macroscopic behaviour of the composite material. This paper presents a full 3-D mesoscale finite element model for concrete.On top of the conventional take-and-place method, an additional process of creating supplementary aggregates is developed to overcome the low packing density problem associated with the take-and-place procedure. An advanced FE meshing solver is employed to mesh the highly unstructured domains. 3D mesoscale numerical simulation is then conducted for concrete specimen under different loading conditions, including dynamic loading with high strain rate. The results demonstrate that detailed mesoscopic damage processes can be realistically captured by the 3D mesoscale model while the macroscopic behaviour compares well with experimental observations under various stress conditions. The well-known inertial confinement effect under dynamic compression can be fully represented with the 3D mesoscale model and the trend of dynamic strength increase with strain rate from the 3D mesoscale analysis agrees well with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D mesoscale finite element modelling of concrete

Zhou

Song

2017

Computers & Structures

140

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“…For instance, qualitative comparisons of 2D crack propagation during shrinkage between simulation and experiments using DIC in thick plates with cylindrical heterogeneities have been proposed in Lagier et al (2011). Comparisons between experiments and numerical simulations of 3D cracking in heterogeneous asphalt models were performed in Yin et al (2014Yin et al ( , 2015, but they were only qualitative. To our best knowledge, direct quantitative comparisons in 3D between numerical models of crack initiation/ propagation and experimental characterization in heterogeneous media are not available so far.…”

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confidence: 99%

Initiation and propagation of complex 3D networks of cracks in heterogeneous quasi-brittle materials: Direct comparison between in situ testing-microCT experiments and phase field simulations

Nguyen

Yvonnet

Bornert

et al. 2016

Journal of the Mechanics and Physics of Solids

108

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Keywords:Micro cracking Quasi-brittle Heterogeneous material Phase-field method Gradient damage model Voxel-based models In situ testing X-ray microtomography Digital volume correlation a b s t r a c tWe provide the first direct comparisons, to our knowledge, of complex 3D micro cracking initiation and propagation in heterogeneous quasi-brittle materials modelled by the phase field numerical method and observed in X-ray microtomography images recorded during in situ mechanical testing. Some material parameters of the damage model, including the process zone (internal) length, are identified by an inverse approach combining experimental data and 3D simulations. A new technique is developed to study the micro cracking at a finer scale by prescribing the local displacements measured by digital volume correlation over the boundary of a small sub-volume inside the sample during the numerical simulations. The comparisons, performed on several samples of lightweight plaster and concrete, show a remarkable quantitative agreement between the 3D crack morphology obtained by the model and by the experiments, without any a priori knowledge about the location of the initiation of the cracks in the numerical model. The results indicate that the crack paths can be predicted in a fully deterministic way in spite of the highly random geometry of the microstructure and the brittle nature of its constituents.

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“…Fracture modelling of concrete in a two‐dimensional mesoscale model framework with contact‐friction interface for the ITZ is studied, which is focused on aggregate‐mortar interface . Noteworthy is a three‐dimensional heterogeneous simulation on crack evolution in quasi‐brittle asphalt mixture, in which the cohesive elements with the tension/shear softening laws are inserted into both the mastic matrix and the aggregate‐mastic interfaces as potential cracks . The cracking behaviour of sheared asphalt mixture is studied, and the bilinear cohesive crack model is employed to simulate the shear fracture process .…”

Section: Introductionmentioning

confidence: 99%

Modelling on crack propagation behaviours at concrete matrix‐aggregate interface

Tang

2019

Fatigue Fract Eng Mat Struct

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A numerical model is proposed to simulate crack propagation at concrete matrix‐aggregate interface. One single aggregate surrounded by concrete matrix is taken to demonstrate the behaviours of crack penetration into concrete matrix and crack growth along the interface. Influences of side‐edge constraint, aggregate direction, and interface fracture energy on the crack propagation behaviours are respectively investigated. The results show that, tensile constraint on the side edge, a smaller angle between tensile axis and aggregate, and higher fracture energy lead to a higher rupture strength of the interface. Once the interface crack starts to grow, it propagates to the two ends of aggregate major axis drastically and further penetrates into the matrix. Nevertheless, these factors have no appreciable influence on crack propagation path. By mapping interface crack into major axis, ordinary crack is generated. Using the above simplification, modelling of multiple crack propagation in concrete is efficiently achieved.

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Three-dimensional heterogeneous fracture simulation of asphalt mixture under uniaxial tension with cohesive crack model

Cited by 66 publications

References 44 publications

3D mesoscale finite element modelling of concrete

3D mesoscale finite element modelling of concrete

Initiation and propagation of complex 3D networks of cracks in heterogeneous quasi-brittle materials: Direct comparison between in situ testing-microCT experiments and phase field simulations

Modelling on crack propagation behaviours at concrete matrix‐aggregate interface

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