Response of an underwater cylindrical composite shell to a proximal implosion

Kishore, Shyamal; Parrikar, Prathmesh Naik; Shukla, Arun

doi:10.1016/j.jmps.2021.104414

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…The modeling also ignored elastic stress wave propagation and concentrated on a plastic shock wave in the core. Kishore et al 11 recently evolved Taylor’s model to incorporate plate bending and ‘after-flow’ fluid velocity. This model captures plate and fluid response when considering shock and blast problems where the shock wave can no longer be considered planar.…”

Section: Analytical and Numerical Modelingmentioning

confidence: 99%

“…This implies that even though a structure might be designed to implode at a certain sea depth, under UNDEX loading the same structure can implode at a lesser depth. Kishore et al 8 investigated the response of a composite shell to the implosion of a nearby weaker shell. Contrary to the study by Gupta et al 94 the composite cylindrically tubes were placed parallel to each other in a free field (without a confining tube).…”

Section: Implosion Phenomena In Marine Composite and Sandwich Structuresmentioning

confidence: 99%

“…Composite shells with cores are also increasingly being studied for increasing strength-to-weight ratios in implodable marine structures and mitigating the dangerous secondary pressure pulses released during an implosion event. [6][7][8] The physical processes associated with the response under blast loading and implosion mechanics in the naval composite sandwich structures and implosion of naval hollow structures are complex and need further exploration. Therefore, an integrated approach involving innovative experimental techniques, advanced theories, and detailed computational studies is warranted.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advances in naval composite and sandwich structures for blast and implosion mitigations

Wanchoo

Kishore

Pandey

et al. 2022

Jnl of Sandwich Structures & Materials

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Naval structures owing to their operational conditions get exposed to extreme loadings and environments. Along with blasts generated through explosion events, enclosed naval structures are also vulnerable to structural dynamic instability, leading to implosion and catastrophic failure. This review explores state of the art in research work carried out to understand the deformation and damage mechanism of naval sandwich structures both on the surface and deep-sea environments. A brief overview of the current understanding regarding the response of sandwich structures to air shock, underwater shock, and implosion owing to dynamic instability is provided. The effect of environmental conditions on the dynamic response of these structures is also discussed. The article further discusses various mitigation techniques proposed to improve the blast and implosion mitigation of sandwich structures and points out the current research gaps existing in the common understanding.

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Section: Analytical and Numerical Modelingmentioning

confidence: 99%

Section: Implosion Phenomena In Marine Composite and Sandwich Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Advances in naval composite and sandwich structures for blast and implosion mitigations

Wanchoo

Kishore

Pandey

et al. 2022

Jnl of Sandwich Structures & Materials

Self Cite

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show abstract

“…Second, a highamplitude pressure pulse is emitted when the cylinder walls make contact, resulting in an abrupt change in the momentum of the surrounding fluid [2]. This pressure wave has been shown to induce damage to neighboring structures [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Underwater Implosion and Energy Mitigation of Hybrid Glass-Carbon Composite Shells

Ngwa,

Chaudhary,

Matos

et al. 2023

JMSE

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Experiments were conducted to investigate the dynamic buckling behavior of underwater hybrid composite tubes. The study focused on roll-wrapped hybrid layered glass-carbon fiber epoxy composite shells with a six-layer quasi-isotropic layup configuration. In addition to control specimens consisting of fully glass fiber-reinforced polymer and carbon fiber-reinforced polymer, four different hybrid layup patterns were examined. These specimens fitted with custom endcaps were placed inside a 7-kiloliter pressure vessel and subjected to increasing hydrostatic pressure until dynamic implosion occurred. High-speed cameras captured the failure event, and the resulting images were analyzed using Digital Image Correlation (DIC) techniques to obtain full-field displacement data. Additionally, tourmaline pressure transducers positioned around the specimens recorded local dynamic pressure histories. The results revealed that the contribution of each ply location varied in the overall failure behavior of the structures. The thickness of the internal plies played a dominant role in enhancing the structural performance, while the stiffness of the outer plies greatly influenced the bending stiffness. The energy released during the collapse was highly dependent on the failure mechanism of the internal plies. Specifically, for the considered geometries, tubes with glass fiber internal plies exhibited significantly lower energy emissions compared to carbon fiber inner plies.

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Double ceramic sphere's sympathetic implosions triggered by local impacts

Zhao

et al. 2023

Journal of Ocean Engineering and Science

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Response of an underwater cylindrical composite shell to a proximal implosion

Cited by 11 publications

References 20 publications

Advances in naval composite and sandwich structures for blast and implosion mitigations

Advances in naval composite and sandwich structures for blast and implosion mitigations

Underwater Implosion and Energy Mitigation of Hybrid Glass-Carbon Composite Shells

Double ceramic sphere's sympathetic implosions triggered by local impacts

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