Experimentally validated numerical analysis of aerostructures incorporating shape memory alloys Conference Paper uri icon

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.

name of conference

  • The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring

published proceedings

  • Behavior and Mechanics of Multifunctional and Composite Materials 2008

author list (cited authors)

  • Hartl, D. J., Mooney, J. T., Lagoudas, D. C., Mabe, J. H., & Calkins, F. T.

editor list (cited editors)

  • Dapino, M. J., & Ounaies, Z.

publication date

  • January 1, 2008 11:11 AM

publisher