Damage Response Characteristics of UHMWPE/aluminum Foam Composite Sandwich Panel Subjected to Combined Blast and Fragment Loadings

被引：0
|
作者：
Cheng Y. [1 ]
Xie J. [1 ]
Li Z. [1 ]
Liu J. [1 ]
Zhang P. [1 ]
机构：
[1] School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Binggong Xuebao/Acta Armamentarii | 2021年 / 42卷 / 08期
关键词：
Combined blast and fragment loading; Composite sandwich panel; Damage response; Numerical simulation;
D O I：
10.3969/j.issn.1000-1093.2021.08.020
中图分类号：
学科分类号：
摘要：
A novel composite sandwich panel with UHMWPE and aluminum foam cores is proposed. The damage mechanism of composite sandwich panel under the combined blast and fragment loading is studied by using LS-DYNA software. The synergetic effects of blast and fragment loadings were achieved by attaching the pre-fabricated fragments to the bottom surface of the cylindrical TNT explosive. The proposed numerical model was validated by comparing the simulated results with the existed experimental data. Based on the calibrated numerical model, the whole dynamic response process, velocity and acceleration response at feature point, as well as the energy dissipation characteristics for the composite sandwich panel were analyzed in detail. Further attention was paid to the effect of face-sheet thickness on the failure modes and plastic deformation of panel. The numerical results reveal that there are two evident peaks in the acceleration-time curve of the fragment and front face-sheet center, which are caused due to the impact of fragments on the front face-sheet and UHMWPE core. The front face-sheet and aluminum foam core contribute to most of the energy absorption. For the target panel with equal face-sheet thickness, a superior blast performance is achieved by well balancing between the penetration resistance of front face-sheet and the bending stiffness of back face-sheet. © 2021, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1753 / 1762
页数：9
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