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On the cross-well dynamics of a bi-stable composite plate

Arrieta, A. F. and Neild, S. A. and Wagg, D. J. (2011):
On the cross-well dynamics of a bi-stable composite plate.
In: Journal of Sound and Vibration, Elsevier, pp. 3424-3441, 330, (14), [Online-Edition: http://dx.doi.org/10.1016/j.jsv.2011.02.006],
[Article]

Item Type: Article
Erschienen: 2011
Creators: Arrieta, A. F. and Neild, S. A. and Wagg, D. J.
Title: On the cross-well dynamics of a bi-stable composite plate
Language: English
Journal or Publication Title: Journal of Sound and Vibration
Volume: 330
Number: 14
Publisher: Elsevier
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Dynamics and Vibrations
Date Deposited: 19 Sep 2012 13:55
Official URL: http://dx.doi.org/10.1016/j.jsv.2011.02.006
Identification Number: doi:10.1016/j.jsv.2011.02.006
Alternative keywords:
Alternative keywordsLanguage
bi-stable composite plate, morphing structures, cross-well dynamicsEnglish
Alternative Abstract:
Alternative abstract Language
Multi-stable composites are a novel type of composites capable of adopting multiple statically stable configurations. Due to the multi-stability property this type of composite material has been considered for several applications, particularly for morphing structures. The change of shape between stable states is achieved by a nonlinear mechanism known as snap-through. Most of the research done on these composites has focused on predicting the configuration after manufacture, its static characteristics and static actuation strategies to induce snap-through. However, these structures will operate subject to dynamic loads. Yet, very little work has been carried out to examine the dynamic behaviour of bi-stable composites. This paper focuses on the study of the cross-well dynamics of a bi-stable composite plate. A simple model previously derived for the dynamics confined to a single stable state is extended to include cross-well dynamics. The rich dynamics are experimentally investigated, focusing on cross-well oscillations and the key dynamic features of snap-through. Numerical simulations are obtained and compared to the experimental results showing good agreement. In particular, experimentally observed characteristics suggesting chaotic oscillations for cross-well dynamics are captured well by the proposed model. The results herein could be used for implementing control strategies for both configuration morphing and undesired snap-through suppression of bi-stable composites.English
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