The Transverse Response of Sandwich Panels to an Underwater Shock Wave

Mäkinen, K.

doi:10.1006/jfls.1999.0222

Cited by 31 publications

(8 citation statements)

References 7 publications

(3 reference statements)

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“…It was found that sandwich plates exhibit a different FSI mechanism compared to that of monolithic plates [5,10]: for a sandwich plate with crushable core, cavitation initiates at a finite distance from the fluid-structure interface due to the resistance offered by the core. On the other hand, if the core response is purely elastic, two cavitation zones may initially appear in the water, as reported by Mäkinen [11]. Experimental evidence for these findings was provided by other researchers [12][13][14] who measured the propagation of cavitation fronts using a transparent shock tube.…”

Section: Introductionmentioning

confidence: 73%

Underwater blast loading of water-backed sandwich plates with elastic cores: Theoretical modelling and simulations

Schiffer

Tagarielli

2017

International Journal of Impact Engineering

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Analytical predictions and finite element (FE) calculations are performed to predict the 1D response to underwater blast loading of sandwich plates with elastic cores, in contact with water on both sides and loaded by an exponentially decaying shock wave on one side. The theoretical models explicitly account for cavitation processes and effects of deep water, and their formulation helps identifying the governing parameters of the problem. Three characteristic regimes of behaviour are identified and regime maps are constructed. The analytical models are validated by FE simulations and used to explore the sensitivity of the predictions to the governing non-dimensional parameters. It is shown that, in the absence of plastic core deformation, sandwich plates with stiff cores are imparted higher blast impulses compared to those with softer cores and equivalent areal mass.

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Section: Introductionmentioning

confidence: 73%

Underwater blast loading of water-backed sandwich plates with elastic cores: Theoretical modelling and simulations

Schiffer

Tagarielli

2017

International Journal of Impact Engineering

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“…More detailed research can be found in Refs. [9][10][11][12][13][14][15]. The results show that metallic sandwich panels offer significant advantages over equivalent mass per unit area monolithic plates when exposed to underwater impulsive loading.…”

Section: Introductionmentioning

confidence: 90%

Comparative Study of the Shock Resistance of Rubber Protective Coatings Subjected to Underwater Explosion

Xiao

Chen

2014

Journal of Offshore Mechanics and Arctic Engineering

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Finite element simulations of rubber protective coatings with différent structures under two dynamic loading cases were performed. They were monolithic coating and honeycomb structures with three different cell topologies (hexachiral honeycomb, reentrant honeycomb, and circular honeycomb). The two loading cases were a dynamic compression load and water blast shock wave. The dynamic mechanical responses of those coatings under these two loading cases were compared. Finite element simulations have been undertaken using the ABAQUSIEXPLICIT software package to provide insights into the coating's working mechanism and the relation between compression behavior and water blast shock resistance. The rubber materials were modeled as hyperelastic materials. The reaction force was selected as the major comparative criterion. It is concluded that when under dynamic compressive load, the cell topology played an important role at high speed, and when under underwater explosion, the honeycomb coatings can improve the shock resistance significantly at the initial stage. For honeycomb coatings with a given relative density, although structural absorbed energy has a significant contribution in the shock resistance, soft coating can significantly reduce the total incident impulse at the initial fluid-structure interaction stage. Further, a smaller fraction of incident impulse is imparted to the honeycomb coating with lower compressive strength.

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“…It is assumed that during the wave propagation process, the pressure p(t) is much less than the bulk modulus of water c 2 w w (2.2 GPa). The equation of motion of the free standing plate is given as (Cole, 1948;Keil, 1956Keil, , 1961Kennard, 1944;Ezra, 1973;Johnson et al, 1966;Taylor, 1941;Deshpande and Fleck, 2005;Xue and Hutchinson, 2004;Makinen, 1999;Liang and Tai, 2006;Gong et al, 2000) m…”

Section: Interaction Of the Primary Pulsementioning

confidence: 99%

Reloading effects on plane plates subjected to non-contact underwater explosion

Rajendran

2008

Journal of Materials Processing Technology

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The Transverse Response of Sandwich Panels to an Underwater Shock Wave

Cited by 31 publications

References 7 publications

Underwater blast loading of water-backed sandwich plates with elastic cores: Theoretical modelling and simulations

Underwater blast loading of water-backed sandwich plates with elastic cores: Theoretical modelling and simulations

Comparative Study of the Shock Resistance of Rubber Protective Coatings Subjected to Underwater Explosion

Reloading effects on plane plates subjected to non-contact underwater explosion

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