Blast loading model of the RC column under close-in explosion induced by the double-end-initiation explosive cylinder

Hu, Yuping; Chen, Li; Fang, Qin; Xiang, Hengbo

doi:10.1016/j.engstruct.2018.08.013

Cited by 42 publications

(7 citation statements)

References 23 publications

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“…Similar findings are reported in the work of Sherkar et al [19], Artero-Guerrero et al [20], and Langran-Wheeler et al [21,22]. Pressure enhancements of between 3.0-6.6 have been reported in the literature for centrally-detonated [23], end-detonated [24], and double-end-detonated cylinders [25].…”

Section: Introductionsupporting

confidence: 88%

Spherical equivalence of cylindrical explosives: Effect of charge shape on deflection of blast-loaded plates

Rigby

Osborne

Langdon

et al. 2021

International Journal of Impact Engineering

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Section: Introductionsupporting

confidence: 88%

Spherical equivalence of cylindrical explosives: Effect of charge shape on deflection of blast-loaded plates

Rigby

Osborne

Langdon

et al. 2021

International Journal of Impact Engineering

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“…Recently, spherical equivalence factors have been derived for a range of cylindrical charges (L D / = 0.2-5.0) by equating plate deformations using finite element analysis (Rigby et al, 2021). Cylindrical blast parameters have also been shown to be dependent on initiation location and recent studies have shown that pressure can be enhanced by up to a factor of 3.0 for centrally-detonated cylinders (Hu et al, 2018;Xiao et al, 2020aXiao et al, , 2020b. Wisotski and Snyer (1965).…”

Section: Introductionmentioning

confidence: 99%

Near-field spatial and temporal blast pressure distributions from non-spherical charges: Horizontally-aligned cylinders

Langran-Wheeler

Rigby

Clarke

et al. 2021

International Journal of Protective Structures

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Research into the characterisation of blast loading on structures following the detonation of a high explosive commonly assumes that the charge is spherical. This has the advantage of simplifying experimental, analytical and computational studies. In practice, however, designers of protective structures must often consider explosive threats which have other geometric forms, which has significant influence on the loading imparted to structures very close to the explosion source. Hitherto, there has been little definitive experimental investigation of the ‘near-field’ blast load parameters from non-spherical explosive charges and studies that have been conducted are usually confined to measurement of the total impulse imparted to a target. Currently, a detailed understanding of the development of loading on a target, necessary to fully inform the design process and appraise the efficacy of predictions from computational models, is lacking. This article, the first part of a wider investigation into these geometrical effects, details work conducted to address this deficiency. Results are presented from an experimental study of loading from detonations of cylindrical charges, set with the longitudinal axis parallel to an effectively rigid target, instrumented to facilitate the capture of the spatial and temporal evolution of the loading at different radial and angular offsets from the charge. These results are compared against loads from spherical charges and the effect of charge shape is identified. Significant differences are observed in the mechanisms and magnitude of loading from cylindrical and spherical charges, which is confirmed through the use of numerical analysis. The overall study provides insights which will assist the future design of effective protection systems.

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“…For the cylindrical charges (Fan et al, 2022; Gao et al, 2021; Langran-Wheeler et al, 2021) commonly used in the military, blast waves were divided into end waves, side waves, and bridge waves according to the direction of charges, which has obvious directionality. The effects of charge shape (Artero-Guerrero et al, 2017) and detonation point (Hu et al, 2018; Zaghloul et al, 2021; Zuo et al, 2020; Xiao et al, 2020) should be quantified to reduce the dispersion of blast loads, which in turn guides the structural design.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation study on blast loads of cylindrical Shells

Wei

Zheng

Yang

et al. 2022

Advances in Structural Engineering

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Public buildings that house large populations are easy targets for terrorist attacks, the primary issue of architectural blast-resistant design is how to get blast loads on the surface of structures, and the shapes of blast waves and buildings both have important effects on it. In this paper, experiments and numerical simulations were carried out on blast loads on the surface of the cylindrical shell. blast loads, detonation products, and blast waves were well recorded and simulated, blast loads at the edge of cylindrical shells were attenuated by about 75%, and vortex rings were accidentally photographed nearby. blast loads are much affected by the location of the detonation point, charge shape, and charge size. The original shape of structures rather than deformation determines the distribution of blast loads, the air viscosity also needs to be scaled when using a scaled model to test blast loads. Experimental and simulation methods can offer a reference for building a standard database of blast loads.

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Blast loading model of the RC column under close-in explosion induced by the double-end-initiation explosive cylinder

Cited by 42 publications

References 23 publications

Spherical equivalence of cylindrical explosives: Effect of charge shape on deflection of blast-loaded plates

Spherical equivalence of cylindrical explosives: Effect of charge shape on deflection of blast-loaded plates

Near-field spatial and temporal blast pressure distributions from non-spherical charges: Horizontally-aligned cylinders

Experimental and simulation study on blast loads of cylindrical Shells

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