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Proceedings Paper

A bio-inspired high-authority actuator for shape morphing structures
Author(s): Dana M. Elzey; Aarash Yusefzadeh Nagh Sofla; Haydn N. G. Wadley
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Paper Abstract

Lightweight structures capable of changing their shape on demand are of interest for a number of applications, including aerospace, power generation, and undersea vehicles. This paper describes a bio-inspired cellular metal vertebrate structure which relies on shape memory alloy (SMA) faces to achieve fully reversing shape change. The resulting vertebrate actuators can be combined with flexible face sheets to create a load-bearing, shape morphing panel. Performance of the vertebrate actuator in terms of maximum curvature and moment is analyzed and discussed. A recently constructed, prototype shape morphing airfoil is used to illustrate the concept.

Paper Details

Date Published: 13 August 2003
PDF: 9 pages
Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, (13 August 2003);
Show Author Affiliations
Dana M. Elzey, Univ. of Virginia (United States)
Aarash Yusefzadeh Nagh Sofla, Univ. of Virginia (United States)
Haydn N. G. Wadley, Univ. of Virginia (United States)

Published in SPIE Proceedings Vol. 5053:
Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics
Dimitris C. Lagoudas, Editor(s)

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