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Media type:
E-Article
Title:
Composites with extremal thermal expansion coefficients
Contributor:
Sigmund, O.;
Torquato, S.
imprint:
AIP Publishing, 1996
Published in:Applied Physics Letters
Language:
English
DOI:
10.1063/1.117961
ISSN:
1077-3118;
0003-6951
Origination:
Footnote:
Description:
<jats:p>We design three-phase composites having maximum thermal expansion, zero thermal expansion, or negative thermal expansion using a numerical topology optimization method. It is shown that composites with effective negative thermal expansion can be obtained by mixing two phases of positive thermal expansions with a void phase. We also show that there is no mechanistic relationship between negative thermal expansion and negative Poisson’s ratio.</jats:p>