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Proceedings Paper

Quasi-static dynamics and pseudoelasticity in polycrystalline shape-memory wires
Author(s): Oscar P. Bruno
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Paper Abstract

A number of related but somewhat conflicting theories have been proposed to explain the pseudoelastic hysteresis exhibited by shape memory alloys (SMA). Some recent experimental results motivated us to introduce yet another model of thermoelasticity. Attempts to justify this model from a micro-thermomechanical perspective have led to the theoretical considerations in this paper. These discussions provide support for the model and they given new perspectives on previous approaches. Based on these ideas, a proposal is made that a realistic microscopic model of polycrystalline SMAs should be based on homogenization of a system of non-linear crystallites and dislocations. A route of attack for this new problem in homogenization theory is indicated.

Paper Details

Date Published: 1 May 1994
PDF: 10 pages
Proc. SPIE 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures, (1 May 1994); doi: 10.1117/12.174229
Show Author Affiliations
Oscar P. Bruno, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 2192:
Smart Structures and Materials 1994: Mathematics and Control in Smart Structures
H. Thomas Banks, Editor(s)

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