Design of Actuation for Bistable Structures Using Smart Materials

Abstract:

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Several smart materials such as shape memory alloys (SMA) and electroactive polymers (EAP) have good properties in small scales and are often a good choice for tiny surface deflection applications. However they need continuous powering to keep their shape change, leading to a significant loss of energy. An interesting approach is to associate a smart material with a bistable element, which provides two stable positions without power. This action requires some energy to snap from one position to the other one. This association gives a very power-efficient solution. In this paper, we present a mechanical study on the actuation of a bistable structure, using a distributed torque actuation that is very suitable for smart materials. We provide an approach to optimize the actuation location, this allow to use less powerful and more compact actuators.

Info:

Periodical:

Edited by:

Pietro VINCENZINI and Giuseppe D'ARRIGO

Pages:

287-292

DOI:

10.4028/www.scientific.net/AST.54.287

Citation:

P. Cazottes et al., "Design of Actuation for Bistable Structures Using Smart Materials ", Advances in Science and Technology, Vol. 54, pp. 287-292, 2008

Online since:

September 2008

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$35.00

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