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Influence of Imperfections on Effective Properties of Cellular Solids

Published online by Cambridge University Press:  10 February 2011

Joachim L. Grenestedt
Joachim L. Grenestedt*
Affiliation:
Department of Aeronautics, Division of Lightweight Structures, Kungl Tekniska Högskolan (Royal Institute of Technology), S-100 44 Stockholm, Sweden, joachim@flyg.kth.se
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Abstract

The mechanical properties of cellular solids, or solid foams, is affected by “imperfections” such as wavy distortions of cell walls, variations in cell wall thickness, non-uniform cell shape, etc. The present paper is focused mainly on elastic stiffnesses of closed cell cellular solids. A “perfect” model is first discussed and shown to predict the behavior of PVC foams well. However, this model over-estimates the stiffnesses of aluminum foams. The relatively poor properties of the aluminum foam are believed to be caused by imperfections in the cells. The main body of the paper focuses on modeling different kinds of imperfections, and analyzing their impact on foam properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 521: Symposium R – Porous & Cellular Materials for Structural Applications , 1998 , 3
Copyright
Copyright © Materials Research Society 1998

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References

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