Coupled continuous–discrete formulation based on microplane and strong discontinuity models for representing non-orthogonal intersecting cracks

Kakarla, Santosh; Rastiello, Giuseppe; Richard, Benjamin; Giry, Cédric

doi:10.1016/j.engfracmech.2021.107565

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…The sum of local contributions leads to a residual shear force at the global scale and so to no more loss of strength. A way to describe the failure after this high damage level could be to introduce a transition to strong discontinuity like in [26]. 8: Boundary conditions and loading for the numerical test of the hollow wall in shear with a normal stress [60] Comparisons between experimental and numerical load/displacement curves are presented in figure 10.…”

Section: Confined Hollow Wall Under Monotonic Shear Loadingmentioning

confidence: 99%

An orthotropic damage model with internal sliding and friction for masonry-like material

Tisserand

Rostagni

Giry

et al. 2022

Engineering Fracture Mechanics

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Section: Confined Hollow Wall Under Monotonic Shear Loadingmentioning

confidence: 99%

An orthotropic damage model with internal sliding and friction for masonry-like material

Tisserand

Rostagni

Giry

et al. 2022

Engineering Fracture Mechanics

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“…The fracture process of brittle materials such as rock is controlled by strain localization. And the continuous-discrete coupling method can simulate the formation process of local damage zone and internal fractures [22]. Zhang et al [23] analyzed the complex fracture phenomenon of concrete under large strain rate based on the continuous-discrete coupling method combined with CT scanning imaging technology.…”

Section: Introductionmentioning

confidence: 99%

The Instability of High-Steep Road Cutting Slope: A 3D Continuum-Discrete Coupling Method

et al. 2022

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In this paper, the 3D continuum-discrete coupling analysis method combined with the strength reduction theory is used to study the macrodeformation, stress law, and microfracture mechanism of a high and steep cutting slope of Zhongkai Expressway in Guangdong Province. The 3D continuum-discrete coupling slope model is established based on the finite difference software FLAC and the discrete element program PFC. Then, based on the correlations between stress tensor and force chain, displacement and shear strain increment, plastic deformation, and microfracture, the mechanism of slope instability is analyzed from macro- and microscales. The research shows the following: (1) the continuum-discrete coupling model is reasonable and effective in the three-dimensional slope stability analysis. (2) The coupling domain was penetrated by the shear band, and the upper part displacement of the coupling domain was large, whose direction was basically consistent with the shear band direction; thus, the slope slip surface was formed. (3) The microfracture can represent the macroscopic failure phenomenon, and the slope landslide can be interpreted as the result of shear fracture in slip direction, accompanied by the extension and penetration of tension crack.

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“…Using such models with the application of a multilevel approach to the description of the mechanical behavior of a composite material allows us to simulate its behavior at different scale levels, to identify stress concentration foci, and to determine conditions for the occurrence and development of microdefects in the material depending on the stress state type, the size and shape of the reinforcement at the micro level. 8,[16][17][18][19][20] Despite the possibility of simulating the stress-strain state in a material at different scale levels, multilevel models are used to solve the problems of determining the stress-strain state for a macroscopic volume with dimensions not exceeding several millimeters, this being certainly smaller than the actual dimensions of structures. As a result, the question arises about the possibility of constructing a computational model describing a real structure at several scale levels.…”

Section: Introductionmentioning

confidence: 99%

Constructing a two-level computational model of cross-ply fiberglass-reinforced plastic from micromechanical testing

Смирнов

Smirnova

Khudorozhkova

2022

Polymers and Polymer Composites

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This paper deals with solving the problem of constructing two-level computational models relating the stress-strain state at the microscale to the stress-strain state of the structural component at the macroscale for layered polymer composite materials with unidirectional fiber stacking in a monolayer. The paper presents a two-level computational mechanical model of a ten-layer cross-ply fiberglass-reinforced polymer composite with (0/90) laying patterns. The model is based on microindentation data. The model is constructed using the finite element method. The constructed model has allowed us to predict the elastic properties of the composite and to calculate stresses at the microscale and macroscale levels of a specimen prior to fracture under tensile conditions. The elastic properties of the polymer composite material predicted by the computational model are compared with the properties obtained from real experiments. Calculated for fiberglass, the elasticity modulus and Poisson’s ratio are 31 GPa and 0.11, respectively. Similar elastic properties obtained from real experiments are 28 GPa and 0.10. The technique used in the paper can be applied to computational experiments with an actual structural component made of a multilayer polymer composite in order to determine the stress-strain state at the micro- and macroscale under external mechanical impact on the structure.

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Coupled continuous–discrete formulation based on microplane and strong discontinuity models for representing non-orthogonal intersecting cracks

Cited by 5 publications

References 51 publications

An orthotropic damage model with internal sliding and friction for masonry-like material

An orthotropic damage model with internal sliding and friction for masonry-like material

The Instability of High-Steep Road Cutting Slope: A 3D Continuum-Discrete Coupling Method

Constructing a two-level computational model of cross-ply fiberglass-reinforced plastic from micromechanical testing

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