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Proceedings Paper

Time-domain mechanical models for SMA pseudoelastic damping behavior
Author(s): Brendon Malovrh; Farhan Gandhi
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Paper Abstract

A series of mechanism-based phenomenological models, comprising of springs and friction elements, are presented for the pseudoelastic damping behavior of Shape Memory Alloys. The constitutive equations and a method for identifying the parameters from experimental hysteresis cycles are presented for each of the models. Comparisons are made with an existing phenomenological model. Unlike the thermodynamic-based models, the present models do not require calculation of austenite- martensite phase transformations. The mechanical analogies provide a strong physical basis to the models, and clear relationships are established between the unlocking of the friction elements and the occurrence of phase transformation.

Paper Details

Date Published: 27 April 2000
PDF: 12 pages
Proc. SPIE 3989, Smart Structures and Materials 2000: Damping and Isolation, (27 April 2000); doi: 10.1117/12.384573
Show Author Affiliations
Brendon Malovrh, The Pennsylvania State Univ. (United States)
Farhan Gandhi, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 3989:
Smart Structures and Materials 2000: Damping and Isolation
T. Tupper Hyde, Editor(s)

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