Thermo-Mechanically Coupled Analysis of Shape Memory ActuatorsNC

Q. Li, and S. Seelecke
Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC, USA

This presentation deals with a Thermomechanical coupled analysis of a Shape Memory wire actuator. The outline for the Shape Memory Alloy model is:

Motivation - Multiple scales and materials

  • Micro-scale mechanisms
  • Meso-scale lattice elements
  • Macro-scale element

Free energy concept
  • Unified approach to various active materials
  • (SMA, PZT, FSMA, etc.)

Mathematical model
  • Statistical thermodynamics
  • Thermally activated processes