A study of bistable laminates of generic lay-up for adaptive structures

Christopher R Bowen, David N Betts, Peter F Giddings, A I T Salo, H Alicia Kim

Research output: Contribution to journalArticle

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Abstract

Asymmetric laminates are known to exhibit two stable cylindrical states and one unstable saddle state. Such bistability has attracted attention in aerospace applications because of the potential low energy requirement to achieve a large deflection or change in shape. This paper presents experimental observations of a generic asymmetric [-30/60] laminate with and without piezoelectric actuation and compares against both energy-based analytical and finite element (FE) models. It is observed that the analytical model offers a qualitative understanding of bistable behaviour, degree of curvature and overall shape but is unable to model the distinctive curvature changes near the boundaries which can be captured by the FE model. The investigation also presents the use of piezoelectric actuation to achieve snap-through in both analytical and FE models, which is compared and validated with experimental characterisation.
LanguageEnglish
Pages235-240
Number of pages6
JournalStrain
Volume48
Issue number3
Early online date26 Jul 2011
DOIs
StatusPublished - Jun 2012

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Laminates
Aerospace applications
Analytical models

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Bowen, C. R., Betts, D. N., Giddings, P. F., Salo, A. I. T., & Kim, H. A. (2012). A study of bistable laminates of generic lay-up for adaptive structures. DOI: 10.1111/j.1475-1305.2011.00817.x

A study of bistable laminates of generic lay-up for adaptive structures. / Bowen, Christopher R; Betts, David N; Giddings, Peter F; Salo, A I T; Kim, H Alicia.

In: Strain, Vol. 48, No. 3, 06.2012, p. 235-240.

Research output: Contribution to journalArticle

Bowen, CR, Betts, DN, Giddings, PF, Salo, AIT & Kim, HA 2012, 'A study of bistable laminates of generic lay-up for adaptive structures' Strain, vol. 48, no. 3, pp. 235-240. DOI: 10.1111/j.1475-1305.2011.00817.x
Bowen CR, Betts DN, Giddings PF, Salo AIT, Kim HA. A study of bistable laminates of generic lay-up for adaptive structures. Strain. 2012 Jun;48(3):235-240. Available from, DOI: 10.1111/j.1475-1305.2011.00817.x
Bowen, Christopher R ; Betts, David N ; Giddings, Peter F ; Salo, A I T ; Kim, H Alicia. / A study of bistable laminates of generic lay-up for adaptive structures. In: Strain. 2012 ; Vol. 48, No. 3. pp. 235-240
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