Analysis of a Coupling Made of Shape Memory Alloy and Its Dynamic Response Due to Impacts

[+] Author and Article Information
K. Nagaya

Department of Mechanical Engineering, Gunma University, Kiryu, Gunma 376, Japan

Y. Hirata

Olympus Co-LTD, Nishi Sinjyuku 1-22-2, Tokyo 169-91, Japan

J. Vib. Acoust 114(3), 297-304 (Jul 01, 1992) (8 pages) doi:10.1115/1.2930261 History: Received June 01, 1990; Revised August 01, 1991; Online June 17, 2008


This article presents a method for designing a shape memory alloy coupling between rods subjected to axial or torsional forces. The design formula is obtained analytically by using the stress-strain relation of the shape memory alloy. Since the coupling work is simple, the coupling has advantages for building members in dangerous zones. However, the coupling force is not enough, so that it has disadvantages for impact loads. To design the coupling under the consideration of impacts, this paper also discusses a transient response of the coupling for various impact loads. Numerical calculations were carried out for some sample problems.

Copyright © 1992 by The American Society of Mechanical Engineers
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