Experimental and numerical investigation of confined explosion in a blast chamber

Wu, Chengqing; Lukaszewicz, Matthew; Schebella, Ken; Antanovskiĭ, L. K.

doi:10.1016/j.jlp.2013.02.001

Cited by 49 publications

(19 citation statements)

References 8 publications

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“…The method of simulating blast loading with AUTODYN is validated by existing experimental data provided by confined blast tests conducted by Wu et al (2013) at the Defence Science and Technology Organisation (DSTO), Australia.…”

Section: Validation Of Numerical Methodsmentioning

confidence: 99%

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Prediction of Confined Blast Loading in Single-Layer Lattice Shells

Zhi

Fan

2014

Advances in Structural Engineering

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Single-layer lattice shells (also known as gridshells) are widely used for architecturally innovative structures. When an explosion occurs inside such a structure, confined blast loading on the structural components will be seriously affected by different factors, such as charge locations and weight, structural types and forms. Moreover, slight changes of blast loading perhaps result in various responses for such a complicated structure. In this paper, blast loads on single-layer lattice shell are calculated by AUTODYN software package. The effect of scaled distance, ratio of rise to span and ratio of height to span are investigated. Simplification of blast loading is studied, and the principles of equivalent loading process are validated with a 40 meters single-layer Kiewitt-8 reticulated dome. In order to predict the blast loading, a precise and simple model is derived from numerical results, which is suitable for a wide scope of single-layer lattice shells. Two applications with different charge weight, structural spans and forms are worked out by using the blast prediction model. Good agreements of comparisons are achieved between prediction model and numerical results.

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Section: Validation Of Numerical Methodsmentioning

confidence: 99%

“…Due to the special shape of the chamber, the tests were designed with the advantage of simplifying the geometry to rectangular for validation (Wu et al 2013). These confined blast tests were conducted in one of corners.…”

Section: Validation Of Numerical Methodsmentioning

confidence: 99%

Prediction of Confined Blast Loading in Single-Layer Lattice Shells

Zhi

Fan

2014

Advances in Structural Engineering

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“…In order to explore the actual characteristics of confined explosion and validate the accuracy of numerical methods, experimental tests were carried out by researchers [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Numerical Method for Predicting the Blast Wave in Partially Confined Chamber

Kong

Cheng

et al. 2018

Mathematical Problems in Engineering

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Blast waves generated by cylindrical TNT explosives in partially confined chamber were studied numerically and experimentally. Based on the classical fifth-order weighted essentially nonoscillatory finite difference schemes (fifth-order WENO schemes), the 1D, 2D, and 3D codes for predicting the evolution of shock waves were developed. A variety of benchmark-test problems, including shock tube problem, interacting blast wave, shock entropy wave interaction, and double Mach reflection, were studied. Experimental tests of explosion events in a partially confined chamber were conducted. Then, the 3D code was employed to predict the overpressure-time histories of certain points of chamber walls. Through comparing, a good agreement between numerical prediction and experimental results was achieved. The studies in this paper provide a reliable means to predict the blast load in confined space.

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“…Blast in confined space will trigger more energy concentration while the pressure behavior in air blast is low frequency blast vibration. It is because air overpressure waves radiate outward to the air surrounding then lower the energy waves concentration [17]. The extreme energy from detonation can create impulsive impact and in consequence, many researchers proposed the high strength of the concrete structures [12][13][14][15]26].…”

Section: Introductionmentioning

confidence: 99%

Properties and Behavior of Geopolymer Concrete Subjected to Explosive Air Blast Loading: A Review

et al. 2017

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Abstract. The severe damage to civilian buildings, public area, jet aircraft impact and defense target under explosive blast loading can cause a huge property loss. Most of researcher discusses the topics on design the concrete material model to sustain againts the explosive detonation. The implementation of modern reinforcement steels and fibres in ordinary Portland cement (OPC) concrete matrix can reduce the extreme loading effects. However, most researchers have proved that geopolymer concrete (GPC) has better mechanical properties towards high performance concrete, compared to OPC. GPC has the high early compressive strength and high ability to resist the thermal energy from explosive detonation. In addition, OPC production is less environmental friendly than geopolymer cement. Geopolymer used can lead to environmental protection besides being improved in mechanical properties. Thus, this paper highlighted on an experimental, numerical and the analytical studies cause of the explosive detonation impact to concrete structures.

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Experimental and numerical investigation of confined explosion in a blast chamber

Cited by 49 publications

References 8 publications

Prediction of Confined Blast Loading in Single-Layer Lattice Shells

Prediction of Confined Blast Loading in Single-Layer Lattice Shells

Numerical Method for Predicting the Blast Wave in Partially Confined Chamber

Properties and Behavior of Geopolymer Concrete Subjected to Explosive Air Blast Loading: A Review

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