Numerical analysis of blast-induced wave propagation using FSI and ALEmulti-material formulations

Chafi, Mehdi Sotudeh; Karami, G.; Ziejewski, Mariusz

doi:10.1016/j.ijimpeng.2009.03.007

Cited by 72 publications

(56 citation statements)

References 11 publications

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“…These computer-aided simulations were, in turn, based upon mathematical models developed by other researchers prior to these 2011 experimental results [13]. Such factors, therefore, support the conclusion that application of Burgers' and Transport equations are correct PDE models to apply, given prior theoretical application of the Euler-Laplacian.…”

Section: The Burgers' and Transport Equations As Appropriate Modelssupporting

confidence: 55%

“…However, shock-waves that impact the human skull at angles other than at 90 • must also be considered, as must the whole asymmetric mechanics of neurological shock-waves in a more holistic sense. It is, therefore, important to at least state the analogous equation, as illustrated by Gerber [11], which reads: R = dp dη sin (µ + λ) dp dζ sin (µ − λ) (12) where: dp dζ = cos (µ) dp ds + sin (µ) dp dn (13) and: dp dη = cos (µ) dp ds + sin (µ) dp dn (14) where p represents pressure, and µ and λ are the angles of incidence in the directions of ζ and η, respectively, for some dummy-variables, s and n. One should, therefore, adopt Equation (12), and the directional derivatives-Equations (13) and (14)-for more complex situations in which multi-directional shock-waves need to be modeled.…”

Section: Preliminary Mathematical Exposition: the Effect Of The Direcmentioning

confidence: 99%

See 1 more Smart Citation

Adoption of the Transport and Burgers' Equations in Modeling Neurological Shock-Waves in the Human Brain Due to Improvised Explosive Devices (IEDs)

Mason¹

2018

Front. Appl. Math. Stat.

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Section: The Burgers' and Transport Equations As Appropriate Modelssupporting

confidence: 55%

Section: Preliminary Mathematical Exposition: the Effect Of The Direcmentioning

confidence: 99%

Adoption of the Transport and Burgers' Equations in Modeling Neurological Shock-Waves in the Human Brain Due to Improvised Explosive Devices (IEDs)

Mason¹

2018

Front. Appl. Math. Stat.

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“…However, there are a limited number of studies in the literature with spherical Eulerian mesh topologies. Chafi et al [2] investigated the incident overpressure and the reflected overpressure on a circular armor plate for C-4 and TNT types of explosives by utilizing the ALE formulation of the LS-Dyna code. Their model reflects a spherical mesh topology.…”

Section: Literature Reviewmentioning

confidence: 99%

Numerical simulation of armored vehicles subjected to undercarriage landmine blasts

Erdik¹,

Kiliç

Kılıç³

et al. 2015

Shock Waves

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Landmine threats play a crucial role in the design of armored personnel carriers. Therefore, a reliable blast simulation methodology is valuable to the vehicle design development process. The first part of this study presents a parametric approach for the quantification of the important factors such as the incident overpressure, the reflected overpressure, the incident impulse, and the reflected impulse for the blast simulations that employ the Arbitrary LagrangianEulerian formulation. The effects of mesh resolution, mesh topology, and fluid-structure interaction (FSI) parameters are discussed. The simulation results are compared with the calculations of the more established CONventional WEaPons (CONWEP) approach based on the available experimental data. The initial findings show that the spherical topology provides advantages over the Cartesian mesh domains. Furthermore, the FSI parameters play an important role when coarse Lagrangian finite elements are coupled with fine Eulerian elements at the interface. The optimum mesh topology and the mesh resolution of the parametric study are then used in the landmine blast simulation. The second part of the study presents the experimental blast response of an armored vehicle subjected to a landmine explosion under the front left wheel in accordance with the NATO AEP-55 Standard. The results of the simulations show good agreement with the experimental measurements.

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“…Most analytical studies related to blast vibrations can roughly be divided into experimental and numerical simulation analyses [10]- [12]. Blast experiments require substantial costs, exhibit location limitations, and possess a certain level of danger, limiting blast-related on-site experiments.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Dynamic Response of Slope under the Blasting Vibration Effect

Wang¹

2014

IJCEE

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Abstract-The effect of blast-induced seismic effect on slope can be considered as a transferred and transformed process of the energy. It is necessary to know the attenuation law of blast-induced seismic wave, in order to make relatively accurate estimation for the extent of the slope affected by blasting vibration. This study applied the LS-DYNA software and adopted the Arbitrary Lagrangian-Eulerian method for numerical analysis. Simulate the surface blast of C-4 explosives in a semi-infinite space, in order to explore the slope stability with different height and gradient are computed. The result shows that the propagation law and attenuation characteristics of the detonation earthquake wave on slope are different to the condition of level ground. Comparing the horizontal displacement and vertical acceleration of the top and toe of the slope, vertical acceleration of the top particles are larger then those of toe, so there is vibration amplification effect at the top of the slope. The slope crest displacement changes slightly decrease when the slope height reaches a certain degree. The attenuation effect of blast-induced seismic wave and the amplification effect of slope exist at the same time. This study can be used as a reference in hazard control of explosion-induced vibration for the structures on the slope.

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Numerical analysis of blast-induced wave propagation using FSI and ALEmulti-material formulations

Cited by 72 publications

References 11 publications

Adoption of the Transport and Burgers' Equations in Modeling Neurological Shock-Waves in the Human Brain Due to Improvised Explosive Devices (IEDs)

Adoption of the Transport and Burgers' Equations in Modeling Neurological Shock-Waves in the Human Brain Due to Improvised Explosive Devices (IEDs)

Numerical simulation of armored vehicles subjected to undercarriage landmine blasts

Numerical Analysis of the Dynamic Response of Slope under the Blasting Vibration Effect

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