Large Deformation Behaviour of Thin Mild Steel Rectangular Plates Subjected to Underwater Explosion Loading Under Air and Water Backed Conditions

Suresh, C.; Ramajeyathilagam, K.

doi:10.1016/j.apor.2021.102780

Cited by 21 publications

(3 citation statements)

References 33 publications

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“…The research emphasized the criticality of incorporating strain rate-dependent material models in UNDEX experimental simulations. Suresh replicated these experiments using a coupled fluid-structure interaction (FSI) model in LS-DYNA, addressing both non-rupture (Suresh & Ramajeyathilagam 2020) and rupture scenarios (Suresh & Ramajeyathilagam 2021). Riley et al (2010) experimented with air-backed circular and square thin plates subjected to near-contact explosions.…”

Section: Damage From Near-field Gas Bubblesmentioning

confidence: 99%

A review of underwater shock and fluid–structure interactions

Matos,

Galuska,

Javier

et al. 2024

Flow

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Underwater explosions are inherently complex and unique physical phenomena markedly distinct from those occurring above the surface. This distinctiveness is primarily attributed to the relatively incompressible nature of water, which fundamentally alters the propagation and impact of shock waves. The study of underwater explosions is paramount in applications such as underwater demolitions for construction and salvage operations. These applications require a comprehensive understanding in order to mitigate the disturbances’ impact on marine structures and ecosystems. Studying underwater explosions and their mitigation encompasses various disciplines, including fluid mechanics, materials science and structural engineering. The work reviewed in this study contributes significantly to enhancing safety measures in marine structures by providing critical insights into the behaviour of structures under extreme conditions. This includes understanding the behaviour of gas bubbles formed by explosions, the transmission of shock waves through different media and the resultant forces exerted on structures submerged in water. Consequently, this review is meant to aid in designing robust and resilient marine systems capable of withstanding severe loading conditions caused by underwater explosions by providing key engineering considerations. The continuous evolution of this research area is essential for advancing maritime technology, ensuring the safety of undersea operations and protecting marine environments from the adverse effects of extreme subaqueous loadings.

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Section: Damage From Near-field Gas Bubblesmentioning

confidence: 99%

A review of underwater shock and fluid–structure interactions

Matos,

Galuska,

Javier

et al. 2024

Flow

View full text Add to dashboard Cite

show abstract

“…On the basis of experiments, with the development of numerical simulation technology, the explosion expansion simulation calculation based on LS-DYNA and AUTODYN has also been realized [21][22] . Suresh combined with the test data, established and verified the underwater EBT simulation model based on LS-DYNA, used the model to study the influence of the water filling proportion of the air back compartment on the plate deformation results [23] , analysed the deformation deflection and deformation deflection curve law of low-carbon rectangular steel plate under different plate thickness, and discussed the impact factor [24] . In China, Zhang [25] , Li [20] and others also discussed the deformation law of plate structure under multiple explosions loading by establishing simulation model, and simulation models accurately restored the secondary loading effect of cavitation closure measured in the test.…”

Section: Underwater Explosion Power Experiments Based On Effect Targetmentioning

confidence: 99%

Review of Evaluation Methods of Underwater Explosion Power of Explosives

Zhi-yuan,

Chao-wei,

Hong-wei

et al. 2023

J. Phys.: Conf. Ser.

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Reasonable evaluation of underwater explosion power of explosives is very important for underwater warhead design and other tasks. This paper summarizes the typical experiments of underwater explosion power evaluation, discusses the power characterization methods involved in the tests, and focuses on the explosion bulge test of plate structure and its corresponding dimensionless deflection characterization means. Based on the existing research results, it is proposed to establish a standardized effect target evaluation method, strengthen the research on the relationship between work parameters, explosive detonation parameters and load parameters, and apply the dimensionless deflection method in explosion expansion test to the characterization of underwater explosion power.

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“…These seriously affect researchersŠ ability to observe and analyze jets, shock waves, projectiles, and targets during explosions and impacts. Therefore, these problems are usually studied by using numerical simulation methods [1][2][3][4][5][6][7][8] . With the development of numerical simulation technology, in the study of explosion and impact problems, increasing attention has been given to the shape and the position of solid substances such as fragments, jets, steel bars and concrete.…”

Section: Introductionmentioning

confidence: 99%

A Volume Rendering Visualization Method Oriented to Explosion Field Features

Ning,

Zhao,

2024

Preprint

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To observe the deformation and the failure process of solid objects in explosion and impact simulations, the clarity and accuracy of simulation image representations should be ensured. However, in the results of three-dimensional (3D) explosion field rendering, surface confusion and blurred images of the microstructure often lead to misunderstandings of the simulation results. In this work, based on the ray casting method and the Blinn-Phong lighting model, a volume rendering method is proposed that can adapt to the characteristics of step changes in the explosion field data and satisfies the requirements of observing the microstructure. The Blinn-Phong lighting model is applied to the light and shade calculation of the resampling point, and the gradient of the resampling point is obtained via interpolation calculations; then, it is normalized to obtain the normal vector. When calculating the material color of the resampling point, the transfer function calculation is performed first; then, the interpolation calculation is performed. Finally, the opacity of the resampling point and the associated material color are substituted into the ray casting synthesis formula.In addition, several groups of examples of visual effects are analyzed from the subjective point of view of human visual effects and the objective points of view of image entropy, the meangradient, image mean and standard deviation. The results show that the new method addresses the problem of interface color confusion, improves the accuracy of microstructure rendering in solid media, increases the spatial sense of visual images, and satisfies the visualization requirements for explosion products and shock waves. At the same time, this approach effectively shortens the time for volume rendering of the explosion field.

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Large Deformation Behaviour of Thin Mild Steel Rectangular Plates Subjected to Underwater Explosion Loading Under Air and Water Backed Conditions

Cited by 21 publications

References 33 publications

A review of underwater shock and fluid–structure interactions

A review of underwater shock and fluid–structure interactions

Review of Evaluation Methods of Underwater Explosion Power of Explosives

A Volume Rendering Visualization Method Oriented to Explosion Field Features

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