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Proceedings Paper

Experimentally validated numerical analysis of aerostructures incorporating shape memory alloys
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Paper Abstract

As the use of active structures continues to become more commercially viable, the need for accurate numerical modeling has gained importance. A current example of such a smart structure includes the variable geometry chevron. Future applications are also being designed, including a variable area jet engine nozzles and a torque tube actuators for rotor blades. This work concentrates on the FEA modeling of the Ni60Ti40 (wt %) SMA used in these applications and subsequent experimental validation. The constitutive model employed for the SMA material accounts for the full thermomechanical response and also accounts for such aspects as variable maximum transformation strain and smooth material hardening during transition. Model calibration is performed via uniaxial material testing. An overview of the model and material properties is presented followed by a discussion of the analysis results for the complex aerospace actuation applications. Comparisons to experimental validation of the overall system response are made.

Paper Details

Date Published: 3 April 2008
PDF: 11 pages
Proc. SPIE 6929, Behavior and Mechanics of Multifunctional and Composite Materials 2008, 692913 (3 April 2008); doi: 10.1117/12.776356
Show Author Affiliations
Darren J. Hartl, Texas A&M Univ. (United States)
Jesse T. Mooney, Texas A&M Univ. (United States)
Dimitris C. Lagoudas, Texas A&M Univ. (United States)
James H. Mabe, The Boeing Co. (United States)
Frederick T. Calkins, The Boeing Co. (United States)

Published in SPIE Proceedings Vol. 6929:
Behavior and Mechanics of Multifunctional and Composite Materials 2008
Marcelo J. Dapino; Zoubeida Ounaies, Editor(s)

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