Optimum discrete location of shape memory alloy wire for enhanced actuation of a compliant link

Banerjee, A. ; Bhattacharya, B. ; Mallik, A. K. (2010) Optimum discrete location of shape memory alloy wire for enhanced actuation of a compliant link Journal of Mechanical Design, 132 (2). 021001_1-021001 _7. ISSN 1050-0472

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Official URL: http://scitation.aip.org/getabs/servlet/GetabsServ...

Related URL: http://dx.doi.org/10.1115/1.4000643

Abstract

For discrete actuation with shape memory alloy (SMA) wires, the actuation moment can be controlled by changing the amount of wire offset. Increasing offset not only enhances the actuating moment, but also demands larger displacement capability of the actuator. In this paper, large deflection of a cantilever beam actuated by a SMA wire has been investigated. Both the theoretical and experimental results reveal the existence of an optimum offset maximizing the end deflection. The optimum offset depends on the flexural stiffness of the beam, SMA wire properties, and the input actuation level.

Item Type:Article
Source:Copyright of this article belongs to The American Society of Mechanical Engineers.
Keywords:Actuators; Beams (structures); Cantilevers; Elasticity; Shape Memory Effects; Wires
ID Code:73590
Deposited On:06 Dec 2011 08:52
Last Modified:06 Dec 2011 08:52

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