Title

Parametric study and optimization of the protect system containing a re-entrant hexagon cored sandwich panel under blast impact

RIS ID

144762

Publication Details

Qi, C., Pei, L., Remennikov, A., Yang, S., Liu, J., Wang, J. & Liao, X. (2020). Parametric study and optimization of the protect system containing a re-entrant hexagon cored sandwich panel under blast impact. Composite Structures, 252

Abstract

© 2020 Elsevier Ltd In this paper, a protect system consists of a re-entrant hexagon honeycomb cored sandwich panel and a homogenous steel plate was firstly proposed. The parametric study including boundary conditions, geometric and thickness parameters of the protect system was conducted. It was found that, under the presented set-up, the boundary conditions did not affect the energy absorption of the protect system, they only altered the internal energy distribution among the protect system. Finally, a novel multi-scale optimization was conducted to further improve the performance of the protect system. Another conventional multi-objective optimization was also conducted for comparison. The results showed that, by affording less computational effort, the multi-scale optimization improved the ASEA (areal specific energy absorption) by 4.9% and reduced MaxD (maximum displacement) by 1.8%, comparing to the conventional multi-objective optimization.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.compstruct.2020.112711