On the use of combined finite/discrete element method for impacted concrete structures

Frangin, Emmanuel; Marin, Philippe; Daudeville, L.

doi:10.1051/jp4:2006134071

Cited by 19 publications

(18 citation statements)

References 5 publications

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“…The desired number of interactions can be set by adjusting the interaction coefficient λ. This defines N, the average number of interactions per discrete element (2). An average number N=12 links per DE was selected by Rousseau [16] to model concrete as an isotropic and homogeneous material.…”

Section: Definition Of Interactionsmentioning

confidence: 99%

“…The non-linear constitutive behaviour of concrete cohesive link between two discrete elements a and b is characterized by a local criterion of rupture found in several studies [1,2,[8][9][10][11][12]16]. A modified Mohr-Coulomb criterion with a sliding function f 1 and a tensile rupture criterion f 2 is used for cohesive links (4).…”

Section: Non-linear Constitutive Behaviourmentioning

confidence: 99%

“…In previous papers, a coupled DEM-FEM approach was proposed to deal with soft impact on RC structures [1,2]. This paper presents a DEM approach able to predict the response of concrete structures under severe loading such as hard impact, for instance due to the turbine of an aircraft engine.…”

Section: Introductionmentioning

confidence: 99%

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Discrete element modelling of concrete structures under hard impact by ogive-nose steel projectiles

Antoniou

Daudeville

Marin

et al. 2018

Eur. Phys. J. Spec. Top.

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Concrete structures are widely used as shielding barriers to protect sensitive infrastructures. Accidental conditions such as aircraft impacts on nuclear containments lead to a designing demand under extreme loadings. A discrete element method (DEM) model is presented, able to predict damage of concrete structures under severe impacts. The original developments of Cundall and Strack for granular materials were extended in the proposed DEM model for cohesive materials such as concrete by introducing cohesive interactions in addition to contact ones. Spring-like interactions between discrete elements are based on phenomenological models inspired by observations at the macroscopic scale. Constitutive parameters are calibrated thanks to simulations of experiments performed under different states of loading (unconfined quasi-static tests, high confined compression, high strain rates). The DEM approach is validated with the simulation of three hard impact tests where numerical and experimental results are discussed. CEA Gramat performed the experiments on plain concrete targets with a passive confinement given by a steel jacket surrounding the cylindrical specimen and submitted to the impact of ogive-nosed steel projectiles.

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Section: Definition Of Interactionsmentioning

confidence: 99%

Section: Non-linear Constitutive Behaviourmentioning

confidence: 99%

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Discrete element modelling of concrete structures under hard impact by ogive-nose steel projectiles

Antoniou

Daudeville

Marin

et al. 2018

Eur. Phys. J. Spec. Top.

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“…The elastic normal and tangential (shear) links stiffnesses are identified from macroscopic elastic parameters (Young's modulus and Poisson's ratio) by using a "micro-macro" relation inspired from homogenization models [2]- [4], [6], [9]- [11]. The behaviour of undamaged concrete is assumed to be linear, elastic, isotropic and homogeneous.…”

Section: Discrete Element Model For Plain Concretementioning

confidence: 99%

Using a Discrete Element/Finite Element Approach to Model Impact of a Rigid Projectile on Concrete and Reinforced Concrete Targets

Antoniou

Daudeville

Marin

et al. 2018

WIT Transactions on the Built Environment

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This paper presents a mixed numerical modelling able to predict the response of reinforced concrete (RC) structures under extreme loadings such as missile impacts. Concrete is modelled using cohesive rigid spherical discrete elements (DE), while steel reinforcement is represented by beam-like finite elements (FE). Concrete-steel DEM/FEM bond model calibrated on pull-out tests is used, which ensures forces transmitting between steel and concrete. This approach is validated through the simulation of two experiments (edge-on-impact test and drop-weight impact) involving hard impacts on plain concrete and a large RC beam. The numerical results are presented and their comparison with the experimental data is discussed.

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“…Originally, the combined finite-discrete element method has been applied by Steadm et al (2004), Eberhardt et al (2004) and Pine et al (2006) to solve the geo-mechanics problems. In the concrete structure field, Munjiza et al (2000), May et al (2006), Frangin et al (2006), Smoljanovic et al (2013) and Seman et al (2013) used this method to model reinforced concrete structures under high loading rate, subsequently represent the cutting-edge in the modeling of quasi-brittle materials. Meanwhile, this paper presents numerical modeling of fracture failure of concrete structures under blast loading using the combined finite-discrete element method.…”

Section: Introductionmentioning

confidence: 99%

Fracture Failure of Reinforced Concrete Slabs Subjected to Blast Loading Using the Combined Finite-Discrete Element Method

Jaini

Feng

Owen

et al. 2016

Lat. Am. j. solids struct.

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Numerical modeling of fracture failure is challenging due to various issues in the constitutive law and the transition of continuum to discrete bodies. Therefore, this study presents the application of the combined finite-discrete element method to investigate the fracture failure of reinforced concrete slabs subjected to blast loading. In numerical modeling, the interaction of non-uniform blast loading on the concrete slab was modeled using the incorporation of the finite element method with a crack rotating approach and the discrete element method to model crack, fracture onset and its post-failures. A time varying pressure-time history based on the mapping method was adopted to define blast loading. The Mohr-Coulomb with Rankine cut-off and von-Mises criteria were applied for concrete and steel reinforcement respectively. The results of scabbing, spalling and fracture show a reliable prediction of damage and fracture. KeywordsFracture, the combined finite-discrete element method, reinforced concrete slab, blast loading

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On the use of combined finite/discrete element method for impacted concrete structures

Cited by 19 publications

References 5 publications

Discrete element modelling of concrete structures under hard impact by ogive-nose steel projectiles

Discrete element modelling of concrete structures under hard impact by ogive-nose steel projectiles

Using a Discrete Element/Finite Element Approach to Model Impact of a Rigid Projectile on Concrete and Reinforced Concrete Targets

Fracture Failure of Reinforced Concrete Slabs Subjected to Blast Loading Using the Combined Finite-Discrete Element Method

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