Experimental investigation on the performance of PVC foam core sandwich panels subjected to contact underwater explosion

2020 ◽  
Vol 235 ◽  
pp. 111796 ◽  
Author(s):  
Tianyu Zhou ◽  
Yuansheng Cheng ◽  
Yanjie Zhao ◽  
Lunping Zhang ◽  
Haikun Wang ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Sandwich Panels ◽  
Underwater Explosion ◽  
Foam Core

Numerical Study on the Response of Functionally Graded PVC Foam Core Sandwich Panels Subjected to Non-Contact Underwater Explosion

2018 ◽  
Author(s):  
Tianyu Zhou ◽  
Pan Zhang ◽  
Yuansheng Cheng ◽  
Manxia Liu ◽  
Jun Liu
Keyword(s):  
Sandwich Panel ◽  
Blast Resistance ◽  
Sandwich Panels ◽  
Underwater Explosion ◽  
Functionally Graded ◽  
Front Face ◽  
Foam Core ◽  
Compression Phase ◽  
The Core ◽  
Back Face

In this paper, the numerical model was developed by using the commercial code LS/DYNA to investigate the dynamic response of sandwich panels with three PVC foam core layers subjected to non-contact underwater explosion. The simulation results showed that the structural response of the sandwich panel could be divided into four sequential regimes: (1) interaction between the shock wave and structure, (2) compression phase of sandwich core, (3) collapse of cavitation bubbles and (4) overall bending and stretching of sandwich panel under its own inertia. Main attention of present study was placed at the blast resistance improvement by tailoring the core layer gradation under the condition of same weight expense and same blast load. Using the minimization of back face deflection as the criteria for evaluating the blast resistant of panel, the panels with core gradation of high/middle/low or middle/low/high (relative densities) from the front face to back face demonstrated the optimal resistance. Moreover, the comparative studies on the blast resistance of the functionally graded sandwich panels and equivalent ungraded ones were carried out. The optimum functionally graded sandwich panel outperformed the equivalent ungraded one for relatively small charge masses. The energy absorption characteristics as well as the core compression were also discussed. It is found that the core gradation has a negligible effect on the whole energy dissipation of panel, but would significantly affect the energy distribution among sandwich panel components and the compression value of core.

scholarly journals Experimental investigation and pseudoelastic truss model for in-plane behavior of corrugated sandwich panels with polyurethane foam core

Structures ◽  
2021 ◽  
Vol 29 ◽  
pp. 823-842
Author(s):  
Ercan Yüksel ◽  
Ahmet Güllü ◽  
Hasan Özkaynak ◽  
Cihan Soydan ◽  
Arastoo Khajehdehi ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Polyurethane Foam ◽  
Sandwich Panels ◽  
Foam Core ◽  
Truss Model

Experimental investigation on the performance of PVC foam core sandwich panels under air blast loading

2019 ◽  
Vol 226 ◽  
pp. 111081 ◽  
Author(s):  
Tianyu Zhou ◽  
Pan Zhang ◽  
Wei Xiao ◽  
Jun Liu ◽  
Yuansheng Cheng
Keyword(s):  
Experimental Investigation ◽  
Sandwich Panels ◽  
Blast Loading ◽  
Foam Core ◽  
Air Blast ◽  
Air Blast Loading

Closure to “Local Failure of Plastic-Foam Core Sandwich Panels”

1970 ◽  
Vol 96 (8) ◽  
pp. 1803-1805
Author(s):  
Billy J. Harris ◽  
Gene M. Nordby
Keyword(s):  
Sandwich Panels ◽  
Local Failure ◽  
Foam Core ◽  
Plastic Foam

Local Failure of Plastic-Foam Core Sandwich Panels

1969 ◽  
Vol 95 (4) ◽  
pp. 585-610
Author(s):  
Billy J. Harris ◽  
Gene M. Nordby
Keyword(s):  
Sandwich Panels ◽  
Local Failure ◽  
Foam Core ◽  
Plastic Foam
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