Quasi-static dynamics and pseudoelasticity in polycrystalline shape-memory wires

Oscar P. Bruno

doi:10.1117/12.174229

1 May 1994 Quasi-static dynamics and pseudoelasticity in polycrystalline shape-memory wires

Oscar P. Bruno

Proceedings Volume 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures; (1994) https://doi.org/10.1117/12.174229
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

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.

Citation Download Citation

Oscar P. Bruno "Quasi-static dynamics and pseudoelasticity in polycrystalline shape-memory wires", Proc. SPIE 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures, (1 May 1994); https://doi.org/10.1117/12.174229

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