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A STUDY INTO THE BEHAVIOR OF AN ALUMINUM FOAM UNDER COMPRESSION

Mahesh, C and Deb, A and Kailas, SV and Shankar, Uma C and Kutty, TRG and Mahule, KN (2013) A STUDY INTO THE BEHAVIOR OF AN ALUMINUM FOAM UNDER COMPRESSION. In: 11th Asia-Pacific Conference on Engineering Plasticity and its Applications, DEC 05-07, 2012 , Singapore, SINGAPORE, pp. 64-67.

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/KEM.5...

Abstract

The characterization of a closed-cell aluminum foam with the trade name Alporas is carried out here under compression loading for a nominal cross-head speed of 1 mm/min. Foam samples in the form of cubes are tested in a UTM and the average stress-strain behavior is obtained which clearly displays a plateau strength of approximately 2 MPa. It is noted that the specific energy absorption capacity of the foam can be high despite its low strength which makes it attractive as a material for certain energy-absorbing countermeasures. The mechanical behavior of the present Alporas foam is simulated using cellular (i.e. so-called microstructure-based) and solid element-based finite element models. The efficacy of the cellular approach is shown, perhaps for the first time in published literature, in terms of prediction of both stress-strain response and inclined fold formation during axial crush under compression loading. Keeping in mind future applications under impact loads, limited results are presented when foam samples are subjected to low velocity impact in a drop-weight test set-up.

Item Type: Conference Proceedings
Additional Information: Copyright for this article belongs to the TRANS TECH PUBLICATIONS LTD, SWITZERLAND.
Keywords: Aluminum foam; Closed-cell; Compression test; Finite element modeling; Impact
Department/Centre: Division of Mechanical Sciences > Centre for Product Design & Manufacturing
Depositing User: Francis Jayakanth
Date Deposited: 22 Apr 2013 06:32
Last Modified: 22 Apr 2013 06:32
URI: http://eprints.iisc.ac.in/id/eprint/46441

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