A review of sacrificial claddings in multilayer protective structure

ZHOU Hui; REN Huiqi; WU Xiangyun; YI Zhi; HUANG Kui; MU Chaomin; WANG Hailu

doi:10.11883/bzycj-2022-0280

Volume 42 Issue 11

Nov. 2022

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Article Navigation > Explosion And Shock Waves > 2022 > 42(11): 111101

ZHOU Hui, REN Huiqi, WU Xiangyun, YI Zhi, HUANG Kui, MU Chaomin, WANG Hailu. A review of sacrificial claddings in multilayer protective structure[J]. Explosion And Shock Waves, 2022, 42(11): 111101. doi: 10.11883/bzycj-2022-0280

Citation:

ZHOU Hui, REN Huiqi, WU Xiangyun, YI Zhi, HUANG Kui, MU Chaomin, WANG Hailu. A review of sacrificial claddings in multilayer protective structure[J]. Explosion And Shock Waves, 2022, 42(11): 111101. doi: 10.11883/bzycj-2022-0280

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A review of sacrificial claddings in multilayer protective structure

doi: 10.11883/bzycj-2022-0280

ZHOU Hui^{1, 2
,},
REN Huiqi^{1, 2
,
,},
WU Xiangyun²,
YI Zhi²,
HUANG Kui²,
MU Chaomin¹,
WANG Hailu²

1.
State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan 232001, Anhui, China
2.
Institute of Defense Engineering, AMS, PLA, Luoyang 471023, Henan, China

Received Date: 2022-06-28
Rev Recd Date: 2022-08-30

Available Online: 2022-09-06

Publish Date: 2022-11-18

Abstract

Abstract

The multilayer protective structure has been widely used in fortifications located above-ground, shallow burial, and tunnel entrances. And this type of structure usually consists of four parts: camouflage layer, shelter layer, sacrifice layer and protection structure. Among them, the sacrifice layer is the main functional unit to reduce the damage effect of strong explosion after penetration. Its action mechanism mainly includes: reducing the proportion of energy propagating to the substructure and extending the propagation path of stress wave by means of the wave impedance mismatch effect; using the layered interface to generate surface waves to reduce the load concentration; absorbing and dissipating shock wave energy through irreversible plastic failure of the matrix material; increasing the structural damping to reduce the vibration effect of the protection structure. Thus, it is of great practical significance to carry out relevant research to improve the overall level of engineering protection. Taking the materials and structure of sacrifice layer as clues, the current status of research on sacrifice layer in multilayer protective structure at home and abroad is systematically sorted out. On this basis, the influence of structural parameters such as the density, wave impedance, thickness, unit shapes and sizes, moisture content and other physical parameters of the sacrifice layer on the protective performance is analyzed. Moreover, several issues that need to be considered in the selection and design of the sacrifice layer are proposed. The perfect sacrifice layer should be economical, reliable, and have a low wave impedance, sufficient static compressive strength and a certain yield strength, which be able to undergo a large plastic deformation under the condition that the yield stress remains essentially constant. Finally, the problems existing in the current research on the sacrifice layer are discussed and prospected, in order to provide a reference for the research and development of the sacrifice layer in the future.
- multilayer protective structure,
- sacrificial cladding,
- lightweight energy absorption,
- cellular materials,
- wave impedance gradient

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References(151)

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