Adaptive structures: some materials and structural issues

Donald Roberts; Peter A. Lloyd; P. Hopgood; Steve W. Mahon; A. R. Bowles

doi:10.1117/12.396395

24 August 2000 Adaptive structures: some materials and structural issues

Donald Roberts, Peter A. Lloyd, P. Hopgood, Steve W. Mahon, A. R. Bowles

Proceedings Volume 4073, Fifth European Conference on Smart Structures and Materials; (2000) https://doi.org/10.1117/12.396395
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom

Abstract

The concept of using embedded or surface-bonded solid-state actuators to effect shape change in carbon fibre composite laminates continues to have technical merit and appeal. Conventional laminate design methods tend to lead to stiff structures, whilst it is easiest to impose a change of shape on a compliant structure. This presents a possible conflict of design and suggests that the useful performance of solid- state actuators will always be limited by the stiffness of the host laminate. One possible solution is to increase the in-plane work capacity of the actuators either by using improved materials such as phase change perovskites like PLZT or improved eletroding techniques such as inter-digitated electrodes (IDEs). In this study, the performance of several different actuator/laminate systems have been modelled to determine a baseline capability in pure bending. Four cases have been considered for different panel thicknesses and lay-up sequences. The materials performance and IDE design issues have also been addressed. Modelling indicates that even with conventional actuator materials, structural displacements can be produced which could provide useful shape change in applications such as missile roll control.

Citation Download Citation

Donald Roberts, Peter A. Lloyd, P. Hopgood, Steve W. Mahon, and A. R. Bowles "Adaptive structures: some materials and structural issues", Proc. SPIE 4073, Fifth European Conference on Smart Structures and Materials, (24 August 2000); https://doi.org/10.1117/12.396395

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