QUANTITATIVE CHARACTERIZATION OF STRESS-STRAIN HYSTERESIS LOOPS OF Cu-Zn-Al SHAPE MEMORY ALLOY
来源期刊：Acta Metallurgica Sinica2001年第2期
论文作者：G.T.Zeng Y.Z.Huo X.T.Zu Y.F.Guo
Key words：shape memory alloy (SMA); hysteresis; quantitative characterization; numerical simulation;
Abstract: A six-parameter mathematical model was introduced to simulate the stress-strain hysteresis and the inner hysteresis of polycrystalline shape memory alloys (SMAs). By comparing with experiments of Cu-Zn-Al SMA, it was shown that the model could be used to calculate the stress-strain relations with rather good accuracy. Moreover,it was found that the six parameters introduced in this paper represented the characteristics of the stress-strain hysteresis of polycrystalline SMA and can be used to characterize the hysteresis quantitatively.
G.T.Zeng1，Y.Z.Huo1，X.T.Zu2，Y.F.Guo1
(1.Department of Metal Materials, Sichuan University, Chengdu 610065, China;
2.Department of Physics, Sichuan University, Chengdu 610064, China)
Abstract:A six-parameter mathematical model was introduced to simulate the stress-strain hysteresis and the inner hysteresis of polycrystalline shape memory alloys (SMAs). By comparing with experiments of Cu-Zn-Al SMA, it was shown that the model could be used to calculate the stress-strain relations with rather good accuracy. Moreover,it was found that the six parameters introduced in this paper represented the characteristics of the stress-strain hysteresis of polycrystalline SMA and can be used to characterize the hysteresis quantitatively.
Key words:shape memory alloy (SMA); hysteresis; quantitative characterization; numerical simulation;
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