Studying on Response of Square Core Sandwich Plate With Hyperelastic Under Explosive Loading Inside Closed Cabin
- Pan Chen (China Ship Development and Design Center) | Qiang Wei (China Ship Development and Design Center) | Zhizhong Liu (China Ship Development and Design Center)
- Document ID
- International Society of Offshore and Polar Engineers
- The 28th International Ocean and Polar Engineering Conference, 10-15 June, Sapporo, Japan
- Publication Date
- Document Type
- Conference Paper
- 2018. International Society of Offshore and Polar Engineers
- response of sandwich plate, hyperelastic material, sandwich plate, explosive inside cabin
- 0 in the last 30 days
- 13 since 2007
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Explosion loading is one of the loadings of warship structure on anti-ship missile, it’s priority to decrease the response of structure on explosive loading. The response of square hole honeycomb sandwich plate with or without hyperelastic material inside on explosion loading in closed cabin were computed by non-linear numerical method. The acceleration, velocity and deformation response of square hole honeycomb sandwich plate with or without hyperelastic material were analyzed. Sandwich plate has low response under explosion loading with hyperelastic material inside, the sandwich plate with hyperelastic material laid on front panel has better anti-shock capability. Sandwich plate have long oscillating period and low relative deformation between front panel and back panel with thicker hyperelastic material layer inside.
The environment of warship cabins are closed, shock wave in closed cabin is different from opening environment. Cabin structure in open environment only suffer the load of initial shock wave, while shock wave reflected repeatedly in closed cabin, leading the cabin stiffened structure has to bear multiple loads of reflected shock wave. A series of experiments and simulations of explosion of TNT inside cabin were researched (Zyskowski and Sochet, 2004). Experiments of explosion of different equivalent TNT with different shapes in closed cabin were done (Wu and Lukaszewicz, 2013).
Stiffened plate is the main structure of ship, aircraft and other steel structure etc. Compared with stiffened plate, sandwich plate have some advantages, included of high specific strength and high specific stiffness etc. Experimental study of multilayer truss sandwich plate on underwater explosion loading was done (Wadley and Dharmasena, 2008). Experiment of two kinds of sandwich plate responsive to underwater explosion loading was carried, the sandwich plates included of quadrilateral honeycomb core and pyramid with a square cross-section truss core member (Mori, 2008). The comparative study of two kinds of sandwich panel under shock loads was carried, leading the results that the sandwich panels can significantly reduce midpoint deformation on the back plate (Dharmasena, 2008; Dharmasena, 2011). Underwater anti-shock structure of bottom sandwich plate of vessel was designed, the research had shown that core layer had a significant effect on resisting shock effect (Wang and Zhang, 2010). Experimental and numerical study of V-shaped core sandwich panel’s response under air explosion loads was carried out (Zhang, 2015; Zhang, 2015). Some factors were used to analyze the anti-shock properties, which were front panel thickness, back plate thickness, V-shaped core thickness, V-shaped angle of the core material and height of core. The total of six different styles of anti-shock performance of core sandwich plates were researched(Alberdi and Przywara, 2013), which included V-shaped core, Y-shaped core, diamond core, hexagonal core, square and triangular core, and different thickness of front panel and back panel were used to analyze the anti-shock performance of sandwich plate. From the perspective of energy absorption, response of different hexagonal prism honeycomb sandwich plate underwater explosion loads were obtained. Sandwich plate with minimal structural damage was selected and an optimized sandwich plate model was obtained (Yu and Bai, 2010). The application of sandwich plate expanded gradually, and sandwich plate structure would get more and more attention.
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