Blast response of water-backed metallic sandwich panels subject to underwater explosion – Experimental and numerical investigations

2019 ◽  
Vol 209 ◽  
pp. 79-92 ◽  
Author(s):  
Lijie Ren ◽  
Honghao Ma ◽  
Zhaowu Shen ◽  
Yixin Wang
Keyword(s):  
Sandwich Panels ◽  
Underwater Explosion ◽  
Numerical Investigations ◽  
Blast Response

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

Contact underwater explosion response of metallic sandwich panels with different face-sheet configurations and core materials

2020 ◽  
Vol 157 ◽  
pp. 107126 ◽  
Author(s):  
Ganchao Chen ◽  
Yuansheng Cheng ◽  
Pan Zhang ◽  
Jun Liu ◽  
Changhai Chen ◽  
...  
Keyword(s):  
Sandwich Panels ◽  
Underwater Explosion ◽  
Face Sheet ◽  
Core Materials

Impact and close-in blast response of auxetic honeycomb-cored sandwich panels: Experimental tests and numerical simulations

2017 ◽  
Vol 180 ◽  
pp. 161-178 ◽  
Author(s):  
Chang Qi ◽  
Alex Remennikov ◽  
Lian-Zheng Pei ◽  
Shu Yang ◽  
Zhi-Hang Yu ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Sandwich Panels ◽  
Experimental Tests ◽  
Blast Response

Numerical Simulation on Response of Foam Core Sandwich Panels Subjected to Underwater Explosion

2016 ◽  
Author(s):  
Dongjie Ai ◽  
Yuansheng Cheng ◽  
Jun Liu ◽  
Jianhu Liu ◽  
Haikun Wang ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Sandwich Structures ◽  
Near Field ◽  
Sandwich Panels ◽  
Underwater Explosion ◽  
Core Material ◽  
Design Parameters ◽  
Equal Weight ◽  
Core Height ◽  
Panel Thickness

Sandwich panel structures, which consist of two thin faces and low relative density cores, can significantly mitigate the possibilities of panel fractures. In the present paper, numerical simulations are conducted to study the deformation and fracture modes of sandwich structures under near-field underwater blasts and contact underwater blasts. Two different core materials are employed, namely aluminum foam and PVC foam. Main focus of this paper was placed to (i) study the failure mechanisms and energy absorption characteristics of sandwich structures in typical conditions, (ii) to demonstrate the benefits of such structures compared with solid plates of equal weight, and (iii) to obtain the properties of withstanding underwater explosion for single core material sandwich panels. In addition, the effects of panel thickness configuration and core height on deformation and energy absorption of the plates were explored. Results indicated that sandwich structures showed an effective reduction in the maximum panel deflection compared with a monolithic plate of same mass. The design parameters have great impacts on the results.

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.

Blast response of aluminium/thermoplastic polyurethane sandwich panels – experimental work and numerical analysis

2019 ◽  
Vol 127 ◽  
pp. 31-40 ◽  
Author(s):  
A. Jamil ◽  
Z.W. Guan ◽  
W.J. Cantwell ◽  
X.F. Zhang ◽  
G.S. Langdon ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Experimental Work ◽  
Thermoplastic Polyurethane ◽  
Sandwich Panels ◽  
Blast Response

scholarly journals Blast Response Studies on Metallic Tube Core Sandwich Panels

2020 ◽  
Vol 2 (6) ◽  
pp. 25-31
Author(s):  
Chaithanya Raja S ◽  
Rajasankar J ◽  
Guru Jawahar J
Keyword(s):  
Sandwich Panels ◽  
Metallic Tube ◽  
Blast Response

Paper tube-guided blast response of sandwich panels with auxetic re-entrant and regular hexagonal honeycomb cores – An experimental study

2022 ◽  
Vol 253 ◽  
pp. 113790
Author(s):  
Ganchao Chen ◽  
Pan Zhang ◽  
Naiqi Deng ◽  
Sipei Cai ◽  
Yuansheng Cheng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Sandwich Panels ◽  
Blast Response ◽  
Honeycomb Cores
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