Blast-resilience of honeycomb sandwich panels

被引:11
作者
Ebrahimi, Hamid [1 ]
Someh, Leila Keyvani [2 ]
Norato, Julian [3 ]
Vaziri, Ashkan [1 ]
机构
[1] Northeastern Univ, Dept Mech & Ind Engn, Boston, MA 02115 USA
[2] Northeastern Univ, Coll Engn, Year Engn Program 1, Boston, MA 02115 USA
[3] Univ Connecticut, Dept Mech Engn, Storrs, CT 06269 USA
基金
美国国家科学基金会;
关键词
Shock loading; Punching; In-plane compression; Residual capacity; Failure mechanisms; NUMERICAL-SIMULATION; FRACTURE PREDICTION; STRUCTURAL RESPONSE; END COMPRESSION; METALLIC PLATES; CONCRETE SLABS; WATER BLAST; THIN PLATES; CORE; RESISTANCE;
D O I
10.1016/j.ijmecsci.2018.05.038
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Well-designed honeycomb sandwich panels are known to have superior blast performance compared to their corresponding solid panel of the same mass. However, the residual structural capacity of honeycomb sandwich panels and their blast resilience has not been systematically studied. Here, we investigate the structural behavior of all-metal honeycomb sandwich panels after shock loading using detailed numerical simulations. The initial shock is varied from relatively small intensities to moderate intensities sufficient to create material failure and significant plastic deformation in the panel. The structural response of the shock-loaded panels is investigated under quasi-static punch indentation and in-plane compression. The maximum load carrying and energy absorption capacities of shock-loaded panels are quantified for a wide range of initial shock intensities and different panel core densities. Failure maps for the honeycomb panels were constructed for each quasi-static loading condition by considering three failure modes: core failure, face sheet failure, and total panel detachment from its support. This study provides new insights into the behavior and structural resilience of the shock-loaded sandwich panels, while further highlighting their potential in the development of resilient structural systems.
引用
收藏
页码:1 / 9
页数:9
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