Characterization of force-deflection behavior of piezoelectrically actuated bistable composite laminate under two-axis constraint

Reference:

Giddings, P. F., Bowen, C. R. and Kim, H. A., 2008. Characterization of force-deflection behavior of piezoelectrically actuated bistable composite laminate under two-axis constraint. Advances in Science and Technology, 56, pp. 380-385.

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Official URL:

http://dx.doi.org/10.4028/www.scientific.net/AST.56.380

Abstract

This paper characterises the properties of unsymmetric bistable carbon fibre composites actuated using a single piezoelectric macro fibre actuator. A piezoelectric–laminate combination under two-axis constraint was evaluated in terms of its load–deflection characteristics, snap-through force and stiffness. The load–deflection characteristics indicate that snap-through force and laminate stiffness increase as a function of piezoelectric actuator drive-voltage. Both snap-through force and laminate stiffness are significantly increased under two-axis constraint, as compared to single-axis constraint. Snap-through force and stiffness are shown to be affected by localised curvature variation caused by laminate ageing.

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