Response of flexible sandwich-type panels to blast loading

被引:54
作者
Karagiozova, D. [2 ]
Nurick, G. N. [1 ]
Langdon, G. S. [1 ]
Yuen, S. Chung Kim [1 ]
Chi, Y. [1 ]
Bartle, S. [1 ]
机构
[1] Univ Cape Town, Dept Mech Engn, BISRU, ZA-7701 Rondebosch, South Africa
[2] Bulgarian Acad Sci, Inst Mech, BU-1113 Sofia, Bulgaria
基金
新加坡国家研究基金会;
关键词
Sandwich; Impact behaviour; Blast loading; CELLULAR MATERIAL; PLATES;
D O I
10.1016/j.compscitech.2007.12.005
中图分类号
TB33 [复合材料];
学科分类号
摘要
This paper reports on experimental and numerical investigations into the response of flexible sandwich-type panels when subjected to blast loading. The response of sandwich-type panels with steel plates and polystyrene cores are compared to panels with steel face plates and aluminium honeycomb cores. Panels are loaded by detonating plastic explosive discs in close proximity to the front face of the panel. The numerical model is used to explain the stress attenuation and enhancement of the panels with different cores when subjected to blast induced dynamic loading. The permanent deflection of the back plate is determined by the velocity attenuation properties (and hence the transmitted stress pulse) of the core. Core efficiency in terms of energy absorption is an important factor for thicker cores. For panels of comparable mass, those with aluminium honeycomb cores perform "better" than those with polystyrene cores. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:754 / 763
页数:10
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