GFRP and steel compounded structure subjected to impact by high velocity projectiles

Yuanhao ZHANG; Changhai CHEN; Xi ZHU

doi:10.3969/j.issn.1673-3185.2017.01.014

Volume 12 Issue 1

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Yuanhao ZHANG, Changhai CHEN, Xi ZHU. GFRP and steel compounded structure subjected to impact by high velocity projectiles[J]. Chinese Journal of Ship Research, 2017, 12(1): 93-100. doi: 10.3969/j.issn.1673-3185.2017.01.014

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GFRP and steel compounded structure subjected to impact by high velocity projectiles

doi: 10.3969/j.issn.1673-3185.2017.01.014

Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China

Received Date: 2016-03-16
Available Online: 2016-12-28
Publish Date: 2017-01-07

Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To explore the influence of steel and GFRP structural configuration on the perforation-resis-tance of a composite armor system of warship bulkhead, a series of high velocity ballistic impact experi-ments are performed.The outer and inner composite armor systems of warship bulkhead are simulated us-ing homogeneous steel plates prefaced and backed with composite laminates, respectively. Failure modes and energy absorption for the two types of combined targets are analyzed and compared with each other. Based on the experimental results, the compounded structure subjected to the impact caused by cube pro-jectiles is simulated using finite element program ANSYS/LS-DYNA, where the process of penetration is investigated and compared with experiment results. It is observed that the numerical results are in good agreement with the experimental results; the failure modes for the composite armors in the two types of com-bined targets are mainly the shear punch failure of steel plates and the fiber shear fracture of GFRP, while the GFRP in the combined target consisted of front steel plates and composite backed armors also has ten-sile failure of fibers; the combined target consisted of front steel plates and composite backed armors ab-sorbs much more energy than that consisted of front composite armors and steel backed plates.
- warship bulkhead,
- composite armor,
- ballistic performance,
- GFRP and steel compounded structure

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