Prediction of blast wave effects on a developed site

Benselama, Adel M.; William-Louis, Mame; Monnoyer, F.

doi:10.1016/j.ijimpeng.2009.08.003

Cited by 17 publications

(9 citation statements)

References 13 publications

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“…The data presented in the current paper may be used as the validation input for the numerical, analytical, or experimental studies. For instance, the data would be useful to validate the numerical model discussed in [24], in the same way as the data from [25] served for validating the numerical model presented in [26], where a large-scale scenario with square longitudinal obstacles was considered. Another example of such an approach is given in [27], where the test data from [28] were used to validate the masonry wall response.…”

Section: Resultsmentioning

confidence: 99%

Experimental study of blast loading behind a building corner

Gajewski

Sielicki

2020

Shock Waves

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The paper presents unique blast experiments in reference to scientific literature and official standards. Experimental scenarios reflect a hypothetical realistic combat situation of a human being covered from a blast wave behind a rigid building corner. In the scenario assumed, the overpressure loads affect the lungs while the person is standing or the eardrums while the person is kneeling at the aiming position. The paper presents 27 free-field experiments measuring the overpressure loads. All the measurements were taken behind the right angle of the rigid wall. Two masses of TNT were considered: 200 g and 400 g. In the selected cases, a low test-to-test variability of the measured data was observed. Detailed plots of overpressure versus time are presented for various distances behind the building corner and TNT charge masses. Peak overpressure versus positive impulse plots are also demonstrated. Furthermore, the safety thresholds regarding different locations behind the building corner are defined for the considered explosive masses.

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Section: Resultsmentioning

confidence: 99%

Experimental study of blast loading behind a building corner

Gajewski

Sielicki

2020

Shock Waves

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“…Different contour images represent typical moments of blast wave propagation, and different pressure values are represented by different colours. At the blast onset, a rarefaction happens in the explosive charge volume, because of the rapid fluid expansion [40]. In the model without a rocket, the high-temperature and high-pressure explosive products produced by the explosive expand and spread rapidly around, and the blast wave spreads outward in the form of approximate spherical wave.…”

Section: Analysis For Propagation Lawof Blast Wavementioning

confidence: 99%

Prediction Method of Blast Wave Impact on Crew Module for Liquid Rocket Explosion on Launch Pad

Wang

Cui

et al. 2019

Applied Sciences

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The role of manned space flight in the field of space exploration and utilization is growing. However, the security system of the manned spaceflight is still imperfect. In the case that the rocket explodes, crew modules maybe damaged by the blast wave, which will threaten the safety of the crews. This research aims to obtain the necessary data and information to enable the designers of the launch vehicles and crew modules to develop safer launch systems. To this end, this paper proposes a numerical method using LS-DYNA to study the propagation law of blast waves caused by rocket explosion on the launch pad and to quantify the impact of the blast wave on crew module. The numerical results indicate that the final blast waveform of the model with rocket is conical in the upper and lower parts, and spherical in the middle. At the same time, the third-stage explosion is the most harmful to the crew module, while the first-stage explosion is the least. Furthermore, the model with rocket has a marked effect on explosion strength: the pressure enhancement factor is about 4–17 times. Most importantly, overpressure prediction formula acting on the crew modulesof explosion on the launch pad is established for quick peak overpressure predicting and damage evaluating.

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“…Ambrosini et al [26] and Luccioni et al [27] studied the propagation of blast waves in an urban environment to determine the mass of explosives used in a terrorist attack. Benselama et al [20] showed that this type of study can be used to draw P-I iso-damage diagrams. Regarding the numerical tool, AUTODYN was used in [25][26][27] and Air3D in [16,[23][24].…”

Section: Street Channellingmentioning

confidence: 99%

“…Rigas and Sklavounos [19] performed a comparison between a numerical model made with CFX-5.6 code and experimental tests. Benselama et al [20] performed a parametric study on this topic, and Silvestrini et al [21] proposed a simplified method for estimating the overpressures from blast waves.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Confined Explosions in Urban Environments

Codina

Borbón

2013

International Journal of Protective Structures

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In recent years, events such as the attack on the World Trade Center as well as many other attacks around the world have shown that terrorism-related activity is dramatically increasing. Such a situation makes necessary to study the effects of blast loading on complex urban environments. In this paper, the phenomenon of channelling in congested urban environments is studied. Channelling is a phenomenon that can significantly increase the destructive potential of a shock wave of an explosion. Hence, channelling must be taken into account in the design of structures subjected to extreme loads in congested urban environments. This paper presents a novel approach to understanding channelling effects using maps of overpressure amplification and impulse amplification. These maps are developed for different street widths and amounts and locations of explosive loads and could be used as a first approximation for design purposes. The characteristic channelling zones are defined and characterised for the first time in the open technical literature. Finally, quantitative conclusions about the influence of the different parameters are highlighted.

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Prediction of blast wave effects on a developed site

Cited by 17 publications

References 13 publications

Experimental study of blast loading behind a building corner

Experimental study of blast loading behind a building corner

Prediction Method of Blast Wave Impact on Crew Module for Liquid Rocket Explosion on Launch Pad

Numerical Study of Confined Explosions in Urban Environments

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