Shock Wave Mediation by Closed-Cell Aluminum Foams
Publication: Journal of Performance of Constructed Facilities
Volume 35, Issue 6
Abstract
Closed-cell aluminum foams of density 0.3 to () were exposed to incident shock waves of 10–11 bar () pressure in a shock tube to study the shock-induced stress on the end wall, which was measured using a fast-response polyvinylidene difluoride (PVDF) sensor. The experimental results revealed amplification of the end-wall stress by 2.5 to 4 times compared to pressure exerted on the front surface of the foams. Shock compression of foams is discussed based on the stress history output of the PVDF. The properties of the densified foam samples, the particle and plastic wave speeds in foams, based on theory, are presented. A numerical analysis of loading the foams with shocks was conducted using Abaqus software to complement the experimental results. The numerical prediction of the end-wall stress also suggests stress amplification by a factor of 2.6 to 3.4. The information can be useful to designers of shock attenuators and defense shields using aluminum foams.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was funded by the Directorate of Extramural Research & Intellectual Property Rights, Defence Research & Development Organisation, India, under Grant RD/0117-DRDO000-002.
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Published In
Journal of Performance of Constructed Facilities
Volume 35 • Issue 6 • December 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Mar 9, 2021
Accepted: Aug 25, 2021
Published online: Sep 25, 2021
Published in print: Dec 1, 2021
Discussion open until: Feb 25, 2022
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