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Proceedings Paper

Piezoelectrically strained bistable laminates with macro fiber composites
Author(s): Andrew J. Lee; Amin Moosavian; Daniel J. Inman
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Paper Abstract

The bistability and snap through capability of an unsymmetric laminate consisting of only Macro Fiber Composites (MFC) are investigated. The non-linear analysis predicts two cylindrically stable configurations when strain anisotropy is piezoelectrically induced within a [0MFC/90MFC]T laminate. This is achieved by bonding two MFCs in their actuated states and releasing the voltage post cure to create in-plane residual stresses. The minimization of total potential energy with the Rayleigh-Ritz method are used to analytically model the resulting laminate. A finite element analysis is conducted in MSC Nastran using the piezoelectric-thermal analogy approach to verify the analytical results. The effects of adhesive properties, bonding cure cycles, MFC layup, and its geometry on the curvatures, displacements, and bifurcation voltages are characterized. Finally, the snap through and reverse snap through capabilities with piezoelectric actuation are demonstrated. This adaptive laminate functions as both the actuator and the primary structure and allows large deformations under a non-continuous energy input. Its snap through capability allows full configuration control necessary in morphing applications.

Paper Details

Date Published: 11 April 2017
PDF: 11 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101640C (11 April 2017); doi: 10.1117/12.2257680
Show Author Affiliations
Andrew J. Lee, Univ. of Michigan (United States)
Amin Moosavian, Univ. of Michigan (United States)
Daniel J. Inman, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)

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