Paper Title:
One-Dimensional Shape Memory Alloy Model Applicable to Any Status of Stress and Temperature
  Abstract

The transformation kinetics formulation is the principal factor underlying the constitutive model of shape memory alloys. Therefore, the transformation kinetics formulation, which is applicable to any status of stress and temperature, is essential for predicting the material behavior of SMAs. In this work, we show that the transformation kinetics of the Brinson model, which is the most widely used 1-dimensional model, has shortcomings under certain stress and temperature histories. In addition, we propose a modified transformation kinetics model that can be used for any stress or temperature conditions. The martensite transformation kinetics is modified so that the transformation from austenite into temperature-induced martensite, due to the decrement of temperature, is coupled with a transformation from austenite or temperature-induced martensite into stress-induced martensite, due to the increment of the stress. Through this modification, the suggested model can simulate the behavior of shape memory alloy materials under arbitrarily changed circumstances at every stress-temperature region.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
1475-1478
DOI
10.4028/www.scientific.net/KEM.326-328.1475
Citation
J. H. Chung, J. S. Heo, M. S. Won, W. Y. Lee, J. J. Lee, "One-Dimensional Shape Memory Alloy Model Applicable to Any Status of Stress and Temperature", Key Engineering Materials, Vols. 326-328, pp. 1475-1478, 2006
Online since
December 2006
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Price
$32.00
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