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Proceedings Paper

One-dimensional modeling of shape memory alloy with improved kinetic relation for phase transformation
Author(s): Xiaodong Wu; Jianshen Wu; Guojun Sun; Caoyin Xie
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Paper Abstract

Based on Brinson's one-dimensional constitutive relation for shape memory alloy (SMA), the kinetic equations for phase transformation are refined in this work in the following aspects: (1) Of both the martensite to austenite transformation and the reverse procedure, the start and finish temperatures of phase transformation for detwinned martensite is differentiated from those for twinned martensite. Different transformation parameters are introduced for the two variants of martensite. (2) The zone of the conversion from twinned martensite to detwinned martensite is extended to the austenite finish temperature Af. Numerical simulations are conducted for (1) stress- strain relation of tensile loading and unloading under constant temperature; (2) strain-temperature relation of heating and cooling under constant stress; (3) stress- temperature relation for heating and cooling under fully restrained condition. All results obtained give good descriptions of thermo-mechanical behavior of SMA.

Paper Details

Date Published: 21 August 2001
PDF: 8 pages
Proc. SPIE 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures, (21 August 2001); doi: 10.1117/12.436499
Show Author Affiliations
Xiaodong Wu, Shanghai Jiao Tong Univ. (China)
Jianshen Wu, Shanghai Jiao Tong Univ. (China)
Guojun Sun, Shanghai Jiao Tong Univ. (China)
Caoyin Xie, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 4326:
Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures
Vittal S. Rao, Editor(s)

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