Experimental and computational analysis of plates under air blast loading

Jacinto, Abel Carlos; Ambrosini, Daniel; Danesi, Rodolfo

doi:10.1016/s0734-743x(01)00031-8

Cited by 120 publications

(57 citation statements)

References 13 publications

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“…In this figure, the ratio between pressure at a given time (P) and the peak pressure (P r ) has been plotted against the ratio of corresponding time (t) to the positive duration value (t d ). The blast pulse profile presented by the Friedlander equation with an α value of unity has been found to match well 02015-p.2 with some experimental results [7]. However, depending on various factors such as change weight, scaled distance, type of blast and other factors, the blast pressure can have a negative phase much higher than the phase represented by the α value of one.…”

Section: Blast Pressure Idealisation and Negative Phasesupporting

confidence: 74%

Effect of Large Negative Phase of Blast Loading on Structural Response of RC Elements

Syed

Mendis

Rahman

2016

MATEC Web of Conferences

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Abstract. Structural response of reinforced concrete (RC) elements for analysis and design are often obtained using the positive phase of the blast pressure curve disregarding the negative phase assuming insignificant contribution from the negative phase of the loading. Although, some insight on the effect of negative phase of blast pressure based on elastic single-degree-offreedom (SDOF) analysis was presented before, the influence of negative phase on different types of resistance functions of SDOF models and on realistic finite element analysis has not been explored. In this study, the effects of inclusion of pulse negative phase on structural response of RC elements from SDOF analysis and from more detailed finite element analysis have been investigated. Investigation of SDOF part has been conducted using MATLAB code that utilizes non-linear resistance functions of SDOF model. Detailed numerical investigation using finite element code DIANA was conducted on the significance of the negative phase on structural response. In the FE model, different support stiffness was used to explore the effect of support stiffness on the structural response due to blast negative phase. Results from SDOF and FE analyses present specific situations where the effect of large negative phase was found to be significant on the structural response of RC elements.

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Section: Blast Pressure Idealisation and Negative Phasesupporting

confidence: 74%

Effect of Large Negative Phase of Blast Loading on Structural Response of RC Elements

Syed

Mendis

Rahman

2016

MATEC Web of Conferences

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“…The explosion loading is either applied to the structure through empirical laws [4][5][6][7][8][9][10] or pressure gauge measurements [11][12][13]. The pressure loading from the explosive charge is assumed to be a rectangular pulse uniformly distributed over the plate surface [4][5][6][7][8] or is idealised as triangular [13][14] or exponentially decaying empirical laws [9][10]12]. A new tendency seems to appear with the fully coupled fluid/structure models where the detonation of the explosive, the air blast shock propagation, the interaction of the blast with the structure and the structure response are computed [15][16], which must be caused by the need of a closer representation of physical phenomena and the rise of computational power.…”

Section: Article In Pressmentioning

confidence: 99%

Submarine hull integrity under blast loading

Langrand

Leconte

Menegazzi

et al. 2009

International Journal of Impact Engineering

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“…Studies have shown that blast loads with short duration and high magnitude influence the response of the structure and modify the material behaviour [3][4][5]. Results of experimental research on steel [6,7], concrete [8,9] and FRP [10] panels subjected to blast loads are reported in the literature. Beams, slabs and shells under blast loads are mostly studied with limit analysis theory, which assumes rigid-plastic behaviour for the material.…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of the performance of two-way RC panels under blast loads

Abdel‐Mooty

Alhayawei

Issa

2014

WIT Transactions on the Built Environment

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Nonlinear dynamic numerical modelling and analysis of concrete panels subjected to blast loads is presented in this paper. Reinforced concrete panels of dimension 1.0 1.0 m and different thicknesses and supported on four sides are subjected to blast loads produced by the detonation of high explosive charges. The modelling and analysis was conducted using ANSYS AUTODYN solver. The accuracy of the model is verified against experimental results of blast load tests on reinforced concrete horizontal slabs subjected to the detonation of high explosive charges above them. The model was capable of simulating the observed damage and displacement with reasonable accuracy. The verified model is used for extensive parametric study to examine the effect of different design parameters on the performance of reinforced concrete slabs under blast loads. The design parameters considered in this study include the effect of concrete compressive strength, panel thickness, reinforcement steel ratio, arrangement of reinforcement steel, and boundary condition on the behaviour of RC panel under blast load. The performance was evaluated in terms of maximum displacement, extent of damage and energy absorbed.

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Experimental and computational analysis of plates under air blast loading

Cited by 120 publications

References 13 publications

Effect of Large Negative Phase of Blast Loading on Structural Response of RC Elements

Effect of Large Negative Phase of Blast Loading on Structural Response of RC Elements

Submarine hull integrity under blast loading

Numerical evaluation of the performance of two-way RC panels under blast loads

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