Journal article

Performance of an auxetic honeycomb-core sandwich panel under close-in and far-field detonations of high explosive

Rajendra Prasad Bohara, Steven Linforth, Abdallah Ghazlan, Tuan Nguyen, Alex Remennikov, Tuan Ngo

COMPOSITE STRUCTURES | ELSEVIER SCI LTD | Published : 2022

Abstract

This paper aims to scrutinise the effectiveness of a re-entrant auxetic honeycomb-core sandwich panel (AHSP) to protect reinforced concrete (RC) slab under close-in and far-field detonations of high explosive. A series of quarter symmetric 3D comprehensive numerical models were developed by using Arbitrary Lagrangian Eulerian (ALE) formulation in LS-DYNA hydrocode. Strain rate effects of the rate sensitive materials were employed in the model to consider dynamic behaviour of the materials during blast loading. The developed numerical model was validated with the documented experimental results. Deformation patterns, energy absorption, overpressure damping, blast pressure deflection, and stre..

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Grants

Awarded by ARC


Funding Acknowledgements

This research was funded through the ARC Discovery project DP170100851: A bio-inspired lightweight composite system for blast and impact protection; and the CRC-P for Advanced Manufacturing and Construction of Smart Building Modules. In addition, the Melbourne Research Scholarship for the opportunity to pursue doctoral degree at The University of Melbourne is appreciated by the first author.