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Jason Frautschi

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Proceedings Article | 1 August 2003 Paper

Finite element simulation of adaptive aerospace structures with SMA actuators

Jason Frautschi, Stefan Seelecke

Proceedings Volume 5049, (2003) https://doi.org/10.1117/12.484063

KEYWORDS: Shape memory alloys, Actuators, Tolerancing, Chemical elements, Aerospace engineering, Computer simulations, Optical simulations, Data modeling, 3D modeling, Skin

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The particular demands of aerospace engineering have spawned many of the developments in the field of adaptive structures. Shape memory alloys are particularly attractive as actuators in these types of structures due to their large strains, high specific work output and potential for structural integration. However, the requisite extensive physical testing has slowed development of potential applications and highlighted the need for a simulation tool for feasibility studies. In this paper we present an implementation of an extended version of the Müller-Achenbach SMA model into a commercial finite element code suitable for such studies. Interaction between the SMA model and the solution algorithm for the global FE equations is thoroughly investigated with respect to the effect of tolerances and time step size on convergence, computational cost and accuracy. Finally, a simulation of a SMA-actuated flexible trailing edge of an aircraft wing modeled with beam elements is presented.

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