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Proceedings Paper

Active strain energy tuning of composite beams using shape memory alloy actuators
Author(s): Ramesh Chandra
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Paper Abstract

This paper presents an analytical study on natural frequencies of rotating open-section composite beams with actuation by embedded shape memory alloy (SMA) fibers. The analysis includes the essential features of open-section composite beam modeling, such as constrained warping and transverse shear deformation. A general plate segment of the beam with and without SMA fiber-composite ply is modeled using laminated plate theory and the forces and displacement relations of this plate segment are then reduced to the force and displacement of the one-dimensional beam. The natural frequencies of rotating graphite-epoxy I-beams with SMA are calculated for different volume ratios of fibers. The feasibility of maintaining constant frequencies at different rotational speeds by SMA actuation is shown for composite I- beams.

Paper Details

Date Published: 8 September 1993
PDF: 18 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152765
Show Author Affiliations
Ramesh Chandra, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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