Failure mode and energy absorption mechanism of steel/aluminum composite plates impacted by spherical fragment

ZHOU Nan; WANG Jinxiang; ZHANG Yaning; GUO Haitao; JIANG Jing

doi:10.11883/bzycj-2016-0131

Volume 38 Issue 1

Nov. 2017

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ZHOU Nan, WANG Jinxiang, ZHANG Yaning, GUO Haitao, JIANG Jing. Failure mode and energy absorption mechanism of steel/aluminum composite plates impacted by spherical fragment[J]. Explosion And Shock Waves, 2018, 38(1): 66-75. doi: 10.11883/bzycj-2016-0131

Citation:

ZHOU Nan, WANG Jinxiang, ZHANG Yaning, GUO Haitao, JIANG Jing. Failure mode and energy absorption mechanism of steel/aluminum composite plates impacted by spherical fragment[J]. Explosion And Shock Waves, 2018, 38(1): 66-75. doi: 10.11883/bzycj-2016-0131

Citation:

ZHOU Nan, WANG Jinxiang, ZHANG Yaning, GUO Haitao, JIANG Jing. Failure mode and energy absorption mechanism of steel/aluminum composite plates impacted by spherical fragment[J]. Explosion And Shock Waves, 2018, 38(1): 66-75. doi: 10.11883/bzycj-2016-0131

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Failure mode and energy absorption mechanism of steel/aluminum composite plates impacted by spherical fragment

doi: 10.11883/bzycj-2016-0131

1.
Department of Criminal Science and Technology, Nanjing Forest Police College, Nanjing 210023, Jiangsu, China
2.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
3.
China North Vehicle Research Institute, Beijing 100072, China

Received Date: 2016-05-13
Rev Recd Date: 2016-08-10
Publish Date: 2018-01-25

Abstract

Abstract

In order to investigate the influence of target structure on the protective performance, series of ballistic experiments and LS-DYNA 3D finite element code were adopted to research the failure mode and energy absorption mechanism of two-layer (steel/aluminum) and three-layer (steel/aluminum/steel) explosive welded targets, as well as a monolithic steel target, which were perforated by spherical fragments. The effects of the layer number, thickness and the combination of the interface on the failure mode were analyzed based on the experimental and numerical results obtained. The results show that the influence of the combination of the target interfaces on the failure mode is the most obvious as compared with the other influencing factors. The fracture mechanism of different plates were shearing and plugging when the interface was well bonded but, when the bonding interface failed due to tension, the thinner rear plate failed mainly due to ductile prolonging deformation. With the increase of the total thickness, the targets were more apt to suffer damage resulting from shearing and plugging. The protective performance of the three-layer composite target is superior to that of the two-layer one with the same areal density and total thickness.
- failure mode,
- energy absorption mechanism,
- explosive welded plate,
- bonding interface

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References(17)

References

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