Phenomenological Modeling of Induced Transformation Anisotropy in Shape Memory Alloy Actuators Conference Paper uri icon

abstract

  • This paper considers new extensions to a three-dimensional constitutive model originally developed by Lagoudas and co-workers. The proposed model accurately and robustly captures the highly anisotropic transformation strain generation and recovery observed in actuator components that have been subjected to common material processing and training methods. A constant back stress tensor is introduced into the model, which is implemented in an exact form for simple tension/torsion loading as well as into a commercial finite element code to perform a 3-D analysis of a Shape Memory Alloy (SMA) torque tube actuator subjected to different loading schemes. Numerical correlations between predicted and available experimental results demonstrate the accuracy of the model. 2012 SPIE.

name of conference

  • Behavior and Mechanics of Multifunctional Materials and Composites 2012

published proceedings

  • BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2012

author list (cited authors)

  • Hartl, D. J., Solomou, A., Lagoudas, D. C., & Saravanos, D.

citation count

  • 17

complete list of authors

  • Hartl, Darren J||Solomou, Alexandros||Lagoudas, Dimitris C||Saravanos, Dimitris

editor list (cited editors)

  • Goulbourne, N. C., & Ounaies, Z.

publication date

  • April 2012