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On the strong closure of strains and stresses in linear elasticity

Published online by Cambridge University Press:  14 November 2011

Markku Miettinen
Affiliation:
Department of Mathematics, University of Jyvaskyla PO Box 35 FIN-40351 Jyväskylä, Finland
Uldis Raitums
Affiliation:
Institute of Mathematics and Computer Science, University of Latvia, LV-1459 Riga, Latvia

Abstract

We consider the following special problem related to the optimal layout problems of materials: given two linear elastic materials, the elasticity tensors of which are C1 and C2, and a force f, find the strong closure of strains and stresses as the distribution of the materials varies, or, alternatively, find the sets of elasticity tensors which generate these strong closures. In this paper, it is shown that the local incompatibility conditions depending on C1, C2 and the local properties of strains or stresses completely characterize these sets. A connection to multiple-well problems is established.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1999

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