A Constitutive Model for Superelastic Shape Memory Alloys Considering the Influence of Strain Rate
Joint Authors
Li, Hong-Nan
Qian, Hui
Guo, Wei
Song, Gang-Bing
Source
Mathematical Problems in Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Shape memory alloys (SMAs) are a relatively new class of functional materials, exhibiting special thermomechanical behaviors, such as shape memory effect and superelasticity, which enable their applications in seismic engineering as energy dissipation devices.
This paper investigates the properties of superelastic NiTi shape memory alloys, emphasizing the influence of strain rate on superelastic behavior under various strain amplitudes by cyclic tensile tests.
A novel constitutive equation based on Graesser and Cozzarelli’s model is proposed to describe the strain-rate-dependent hysteretic behavior of superelastic SMAs at different strain levels.
A stress variable including the influence of strain rate is introduced into Graesser and Cozzarelli’s model.
To verify the effectiveness of the proposed constitutive equation, experiments on superelastic NiTi wires with different strain rates and strain levels are conducted.
Numerical simulation results based on the proposed constitutive equation and experimental results are in good agreement.
The findings in this paper will assist the future design of superelastic SMA-based energy dissipation devices for seismic protection of structures.
American Psychological Association (APA)
Qian, Hui& Li, Hong-Nan& Song, Gang-Bing& Guo, Wei. 2013. A Constitutive Model for Superelastic Shape Memory Alloys Considering the Influence of Strain Rate. Mathematical Problems in Engineering،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-1031754
Modern Language Association (MLA)
Qian, Hui…[et al.]. A Constitutive Model for Superelastic Shape Memory Alloys Considering the Influence of Strain Rate. Mathematical Problems in Engineering No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-1031754
American Medical Association (AMA)
Qian, Hui& Li, Hong-Nan& Song, Gang-Bing& Guo, Wei. A Constitutive Model for Superelastic Shape Memory Alloys Considering the Influence of Strain Rate. Mathematical Problems in Engineering. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-1031754
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1031754