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RESEARCH PAPERS

Simulation of the Superelastic Response of SMA Orthodontic Wires

[+] Author and Article Information
D. Raboud

Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G8

J Biomech Eng 120(5), 676-685 (Oct 01, 1998) (10 pages) doi:10.1115/1.2834761 History: Received January 03, 1997; Revised April 07, 1998; Online January 23, 2008

Abstract

Shape-memory alloys have properties that make them well suited to a variety of applications. One application for which their unique combination of properties (large elastic range, low modulus of elasticity, ability to deliver nearly constant forces over a wide range of deformations) seems ideally suited is for orthodontic retraction appliances where these properties are very desirable. The mechanical response of shape-memory alloys is modeled by a simple constitutive model that captures the essential superelastic behavior of the shape-memory wires. An initial value approach that iteratively converges to the appropriate boundary conditions is utilized to deliver numerical solutions. Qualitative agreement is shown with previous experimental works. The possible benefits of using such wires in an orthodontic retraction appliance are then investigated.

Copyright © 1998 by The American Society of Mechanical Engineers
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