A cohesive zone based DE/FE coupling approach for interfacial debonding analysis of laminated glass

Gao, Wei; Liu, Xin; Chen, Shunhua; Bui, Tinh Quoc; Yoshimura, Shinobu

doi:10.1016/j.tafmec.2020.102668

Cited by 27 publications

(13 citation statements)

References 58 publications

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“…Small particles are used to bond to bulk materials; the cohesive force between particles will be overcome under external force, to simulate the crushing process of materials. The energy consumption is calculated according to the force and displacement of the particle interaction in the process of bond fracture (Gao et al 2020).…”

Section: Establishment Of a Corn Stalk Dem Modelmentioning

confidence: 99%

A discrete element method model of corn stalk and its mechanical characteristic parameters

Zhang

Zhao

Liu

et al. 2020

BioRes

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In a simulation model of the process of corn straw crushing, its physical parameters and the model itself influence the accuracy of the numerical calculations of the discrete element method. This study attempts to improve the simulation accuracy of the crushing process and to find the optimal combination of parameters. Based on the Hertz-Mindlin with Bonding contact model, multiple particle replacement and bonding programs written using Visual Studio were imported through the application programming interface (API) of a discrete element method (DEM) model to establish three particle-bonding materials for a numerical simulation of the crushing process. Using results of mechanical corn stalk tests, DEM simulations of impact fracture, compression fracture, and bending fracture were conducted to determine the optimal combination of parameters. The resultant DEM-parameter combination led to simulation errors of 3.83%, 5.95%, and 7.86% in numerical simulations of impact fracture, bending fracture, and compression fracture of corn stalks, respectively. The performance of the corn stalk DEM using the proposed optimal parameter combination was validated using a 9RS-60 corn stalk crusher, revealing that the numerical simulation error was 8.77%. This study can improve the accuracy of the discrete element method in the simulation of the corn straw breaking process.

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Section: Establishment Of a Corn Stalk Dem Modelmentioning

confidence: 99%

A discrete element method model of corn stalk and its mechanical characteristic parameters

Zhang

Zhao

Liu

et al. 2020

BioRes

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“…A damage parameter is used to record the damage state and, thus, the fracture process is irreversible. Note that some CZMs are also used in conjunction with the DEM for fracture modeling in homogeneous materials [18,[34][35][36] and laminated materials [30,37,38], but the cohesive formulation differs. The remainder of the paper is organized as follows: the DE connective model is firstly outlined to describe the intact stage of elastic solids in Section 2.…”

Section: Connective Model: Representation Of Isotropic Elastic Solidmentioning

confidence: 99%

“…In general, CZMs are categorized into intrinsic ones and extrinsic ones. In the intrinsic CZM [1,14,[28][29][30], the interfacial cohesive elements need to be pre-defined in the possible fracture paths. It should be noted that the cohesive law in intrinsic CZMs consists of an initial loading stage and a softening stage, where the former stage is unphysical and introduces artificial compliance into the model.…”

Section: Introductionmentioning

confidence: 99%

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A Particle-Based Cohesive Crack Model for Brittle Fracture Problems

Zhang

Zhu

et al. 2020

Materials

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Numerical simulations of the fracture process are challenging, and the discrete element (DE) method is an effective means to model fracture problems. The DE model comprises the DE connective model and DE contact model, where the former is used for the representation of isotropic solids before cracks initiate, while the latter is employed to represent particulate materials after cracks propagate. In this paper, a DE particle-based cohesive crack model is developed to model the mixed-mode fracture process of brittle materials, aiming to simulate the material transition from a solid phase to a particulate phase. Because of the particle characteristics of the DE connective model, the cohesive crack model is constructed at inter-particle bonds in the connective stage of the model at a microscale. A potential formulation is adopted by the cohesive zone method, and a linear softening relation is employed by the traction–separation law upon fracture initiation. This particle-based cohesive crack model bridges the microscopic gap between the connective model and the contact model and, thus, is suitable to describe the material separation process from solids to particulates. The proposed model is validated by a number of standard fracture tests, and numerical results are found to be in good agreement with the analytical solutions. A notched concrete beam subjected to an impact loading is modeled, and the impact force obtained from the numerical modeling agrees better with the experimental result than that obtained from the finite element method.

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“…local damage models [14,15]), anisotropic crack propagation using sharp description of cracks (e.g. FEM remeshing techniques [16,17] and eXtended Finite Element Method (XFEM) [18][19][20] in anisotropic media), cohesive zone models [21,22] in layered materials. Local damage models are well-known to be associated with mesh-dependency issues and lack of energetic convergence.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic elastoplastic phase field fracture modeling of 3D printed materials

Yvonnet

Combescure

et al. 2021

Computer Methods in Applied Mechanics and Engineering

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A phase field model for anisotropic, elastoplastic fracture model in layered structures obtained by 3D printing processes is proposed. An extension of anisotropic phase field to elastoplasticity model is developed. The model is able to describe a transition from quasi-brittle to elastoplastic fracture behaviors depending on the angle of layers in the microstructure with respect to the external loading. Such feature is of special interest to describe the anisotropic fracture behavior in layered 3D printed materials. The present model introduces two phase field variables, one bulk fracture damage and one micro interfacial damage variables, describing two different micro damage mechanisms. Finally, we have proposed an original methodology to identify the macroscopic strain density as a function of the micro interfacial damage variable using numerical homogenization on Representative Volume Elements. Numerical investigations show that the present model is convergent with respect to mesh refinement, and allows to describe complex crack initiation and propagation in layered elastoplastic structures. An experimental comparison is provided to validate the use of such model for 3D printed polymer materials.

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A cohesive zone based DE/FE coupling approach for interfacial debonding analysis of laminated glass

Cited by 27 publications

References 58 publications

A discrete element method model of corn stalk and its mechanical characteristic parameters

A discrete element method model of corn stalk and its mechanical characteristic parameters

A Particle-Based Cohesive Crack Model for Brittle Fracture Problems

Anisotropic elastoplastic phase field fracture modeling of 3D printed materials

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