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Proceedings Paper

Modeling and design of ferroelectric beam actuators
Author(s): John E. Huber
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Paper Abstract

A non-linear bimorph device is proposed, in which the strain accompanying ferroelectric switching is used to drive curvature of a bilayer of ferroelectric material. An analysis of the proposed device suggests that a curvature about an order of magnitude greater than that readily obtained by conventional piezoelectric bimorphs is possible, whilst the peak tensile stresses in the device are comparable with those in conventional devices. The curvature achieved by the device upon poling is calculated approximately by using an analytical approach with idealized material behaviour. Two potential designs for the poling electrodes are suggested, and numerical calculations are used to optimize these designs.

Paper Details

Date Published: 21 July 2004
PDF: 9 pages
Proc. SPIE 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics, (21 July 2004); doi: 10.1117/12.539535
Show Author Affiliations
John E. Huber, Univ. of Cambridge (United Kingdom)

Published in SPIE Proceedings Vol. 5387:
Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics
Dimitris C. Lagoudas, Editor(s)

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