EFFECTIVE ELASTIC MODULI OF CLOSEDCELL ALUMINIUM FOAMS – HOMOGENIZATION METHOD

P. Koudelka, T. Doktor, J. Valach, D. Kytýr, O. Jiroušek

Abstract

During the last decades, there has been much effort on the determination of effective elastic properties of porous metals. In this paper, the overall elastic moduli of reference aluminium foam Alporas are assessed using predictive methods based on definition of compliance contribution tensor. Surface of the foam is captured using flatbed scanner and such data are subjected to image and signal processing routines in order to obtain dimensions of the sufficient representative volume element and calculation of structural characteristics for analytical homogenization. It is shown that only the Mori-Tanaka scheme gives results close to nominal values.

Keywords

metal foam, micromechanical properties, homogenization

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IMEKO-YSESM-2012-40.pdf

DOI

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IMEKO TC

TC15 - Experimental Mechanics

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