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

Authors

Chang Qi
Lian Pei
Alex M. Remennikov, University of WollongongFollow
Shu Yang
Jun Liu
Jun WangFollow
Xiang Liao

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.