Mechanical response of V shaped plates under blast loading

Markose, Agesh; Rao, C. Lakshmana

doi:10.1016/j.tws.2017.02.002

Cited by 30 publications

(14 citation statements)

References 13 publications

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“…Markose and Rao (2017) also used numerical modelling to investigate the response of V-plates to blast loading. A small-scale model was developed using LS-DYNA and validated using the test results in Chung Kim Yuen et al (2012).…”

Section: Introductionmentioning

confidence: 99%

The effect of the bend radius on the impulse transfer characteristics of V-hulls: Numerical simulations

Langdon

Shekhar

2019

International Journal of Protective Structures

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A study was performed to investigate the effects of geometry on impulse transfer to V-plates subjected to localised air-blast loading. The V-plates were designed to be 1:8 scale compared to the full-scale V-hulls used in landmine-protected vehicles. Simulations were performed using LS-DYNA and validated using results from blast experiments on scaled rigid V-plated structures of varying internal angle. The validated numerical models were then used to ascertain the influence of including the clamp, varying the stand-off distance, internal angle and V-tip radius on impulse transfer. The simulations showed that, in general, the impulse increased as V-tip radius increased. For the 90° and 120° V-plates, the impulse transferred was observed to plateau for bend radii greater than 160 mm. The increase in impulse was attributed to changes in the spatial and temporal load distribution due to the higher V-tip radius. There was no significant variation in the pressure distributions for larger bend radii (above 160 mm). For both the 90° and 120° V-plates, a dip in impulse was observed when the V-tip radii was between 0 and 20 mm. This was caused by reduced peak pressures and an increase in gas flow. Fixing the clearance height and increasing the V-tip radius (and therefore the stand-off distance) had no discernible effect on impulse transfer. However, it was shown to increase the arrival time and load duration, while decreasing the peak total force.

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Section: Introductionmentioning

confidence: 99%

The effect of the bend radius on the impulse transfer characteristics of V-hulls: Numerical simulations

Langdon

Shekhar

2019

International Journal of Protective Structures

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“…Plates with lower angles of entry consistently provide lower deflection values when compared to flat plates. This occurs for various values of the charge mass [20].…”

Section: Markose Et Al (2017) Blast Loading V-shaped Platesmentioning

confidence: 96%

Investigation of Honeycomb Sandwich Panel Structure using Aluminum Alloy (AL6XN) Material under Blast Loading

Ansori

Prabowo²,

Muttaqie³

et al. 2022

Civ Eng J

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In this study, we focused on the large inelastic behavior of a sandwich panel made of two solid plates as a stiffener and a honeycomb core shell subjected to blast load. The loading scheme was carried out using an explosive charge bullet mounted at a standoff distance of 100 mm with three mass variations of trinitrotoluene: 1, 2, and 3 kg TNT. The numerical simulations performed using ABAQUS/CAE were validated with the experimental results of a previous study. The geometrical effects of the sandwich panel on intact and damaged models were also numerically investigated. The panel was designed using a square and hexagonal honeycomb core. The effect of honeycomb core height was also observed by modeling the core using three height variations: 31, 51, and 71 mm. The results showed that the hexagonal core was more resistant to blast loads than the square design. The core height parameter determines the energy absorption based on these results. The structural strength is also affected by the damage. The findings of this study can be used to improve structural designs that utilize sandwich panels to withstand blast loads. Doi: 10.28991/CEJ-2022-08-05-014 Full Text: PDF

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“…Under the effect of "air wedge" of detonation gas, the crack develops further, which separates the affected region from the parent rock, and can eventually cause the rock in the region to be thrown away. e shaped charge blasting fully uses the characteristics of the "resistive to compression and vulnerable to tension" of rock, which causes the formation of tangential tensile stress Advances in Civil Engineering that is vertical to the shaped charge direction through the coupling effect of the shaped charge groove and the explosive charge [16,17]. e tangential tensile stress causes the initial crack on the pore wall of the blast hole.…”

Section: Rock-fracturing Characteristics Of Multidirectionalmentioning

confidence: 99%

Damage Analysis of Concrete Structure under Multidirectional Shaped Charge Blasting Using Model Experiment and Ultrasonic Testing

Liu

Zhang

Tang

et al. 2021

Advances in Civil Engineering

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Quantitatively analyzing multidirectional shaped charge blasting energy distribution and improving the rock-fracturing efficiency have been a challenging problem in blasting and civil engineering. In this work, we carry out four groups of concrete model experiments using ultrasonic testing, comparing conventional blasting, and multidirectional shaped charge blasting. Then, the probability and statistics method is used to quantitatively analyze the blasting damage and the energy distribution. The test results show that ultrasonic testing and statistics model can quantitatively evaluate the damage law and energy distribution of blasting. By comparing with conventional blasting method, the multidirectional shaped charge blasting with V-shaped multidirectional shaped energy groove has achieved the effect of energy accumulation. It increases the distribution of energy in the rock crack district, increases the blasting damage range, and improves the rock-fracturing efficiency of blasting. The V-shaped multidirectional shaped energy groove can be used as a new approach for rock fracturing in similar projects.

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Mechanical response of V shaped plates under blast loading

Cited by 30 publications

References 13 publications

The effect of the bend radius on the impulse transfer characteristics of V-hulls: Numerical simulations

The effect of the bend radius on the impulse transfer characteristics of V-hulls: Numerical simulations

Investigation of Honeycomb Sandwich Panel Structure using Aluminum Alloy (AL6XN) Material under Blast Loading

Damage Analysis of Concrete Structure under Multidirectional Shaped Charge Blasting Using Model Experiment and Ultrasonic Testing

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