Crack propagation analysis using PDS-FEM and comparison with fracture experiment

Oguni, Kenji; Wijerathne, Lalith; Okinaka, Tomoo; Hori, Muneo

doi:10.1016/j.mechmat.2009.07.003

Cited by 29 publications

(9 citation statements)

References 12 publications

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“…Direct comparisons between experimental characterization of crack evolutions and simulations can be found in the 2D context (Ismonov and Daniewicz, 2010;Oguni et al, 2009), mainly in thin/thick plates with defects (holes or notches), where cracks are usually followed by digital image correlation (DIC) techniques. Grégoire et al (2007) performed direct comparisons of dynamic crack paths under mixed modes in transparent PMMA loaded in split Hopkinson-Kolsky bars with XFEM numerical simulations.…”

mentioning

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

110

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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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mentioning

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

110

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“…The Delaunay tessellation is a tetrahedron on the three-dimensional problem. The detailed discretization scheme is shown in Oguni et al [10]. Then, the discretized strain energy I is ( ) …”

Section: Mathematical Model Of Desiccation Crackingmentioning

confidence: 99%

“…This model can reflect the inhomogeneous water distribution due to desiccation on the problem of the deformation and the fracture. We perform the weak coupling analysis of the finite element analysis for the desiccation and the analysis of Particle Discretization Scheme Finite Element Method (PDS-FEM) [9], [10] for the deformation and the fracture. The simulation results are compared with the experimental results qualitatively.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Desiccation Cracking Process by Weak Coupling of Desiccation and Fracture

Hirobe¹

2017

GEOMATE

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ABSTRACT:The prediction of the possibilities for the desiccation cracking is important for the building construction because they could cause damages to the foundation structures. While the experimental and numerical researches were performed with various materials and conditions, the mechanism of the desiccation cracking is still not clear. In this research, the desiccation cracking is modeled by the coupling of the desiccation governed by the diffusion equation, the deformation, and the fracture. We perform the weak coupling analysis of the finite element analysis for the desiccation and the analysis of Particle Discretization Scheme Finite Element Method (PDS-FEM) for the deformation and the fracture. The simulation is carried out with the different thickness of the desiccation layer under various boundary conditions. The simulation results show the satisfactory agreement with the experimental observation in terms of the crack pattern with net-like structure, pattern formation process, and the change in size of the cells framed by the cracks depending on the thickness of the desiccation layer. This agreement between the simulation results and the experimental observations indicates that the coupling of desiccation, deformation, and fracture is a fundamental mechanism of the desiccation cracking.

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“…In this paper, the coupled model of desiccation, deformation, and fracture is proposed for the problem of the desiccation crack phenomenon. We perform the weak coupling analysis of the finite element method for the desiccation and particle discretization scheme finite element method (PDS-FEM) [8] for the seamless analysis of the deformation and fracture based on this coupled model. The results of the numerical analysis are compared with the results of drying experiments of calcium carbonate slurry and validated qualitatively.…”

Section: Introductionmentioning

confidence: 99%

The Experiments and Modelling for the Desiccation Cracking

Hirobe¹

2016

Proceedings of the 2016 International Conference on Mechanics, Materials and Structural Engineering

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The desiccation cracks can be often observed on dry-out soil surfaces. These cracks have a net-like structure and tessellate the surface of the material into polygonal cells hierarchically. The size and the shape of these cells on the final pattern change systematically depending on the specimen thickness and the constraint conditions. In this paper, firstly, we perform the drying experiments of calcium carbonate slurry. Then, we propose the coupled model of desiccation, deformation, and fracture for the problem of the desiccation cracking and perform the weak coupling analysis of the finite element method and particle discretization scheme finite element method. The results of the numerical analysis show the satisfactory agreement with the experimental observation in terms of the process of the crack pattern formation and the change in size of the cells corresponding to the thickness of the specimen.

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Crack propagation analysis using PDS-FEM and comparison with fracture experiment

Cited by 29 publications

References 12 publications

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

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

Numerical Simulation of Desiccation Cracking Process by Weak Coupling of Desiccation and Fracture

The Experiments and Modelling for the Desiccation Cracking

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