A Finite Element Study of Stable Crack-Growth in Superelastic Shape Memory Alloys Conference Paper uri icon

abstract

  • A finite-element analysis of stable crack growth in superelastic Shape Memory Alloys (SMAs) is carried out for plane strain, mode I loading. The small-scale transformation assumption is employed in the calculations using displacement boundary conditions on a circular region that encloses the stress-induced phase transformation zone. The constitutive law adopts the classical rate-independent small-strain flow theory for the evolution equation of the transformation strains. The crack is assumed to propagate quasi-statically with the energy release rate maintained at a critical value; the analysis is accomplished by means of the Virtual Crack Closure Technique (VCCT). Resistance curves, obtained for a range of thermomechanical parameters, show enhanced fracture toughness.

name of conference

  • ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems

published proceedings

  • Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting

author list (cited authors)

  • Parrinello, A., Baxevanis, T., Lagoudas, D., & Cox, A

citation count

  • 0

complete list of authors

  • Parrinello, Antonino||Baxevanis, Theocharis||Lagoudas, Dimitris||Cox, Austin

publication date

  • September 2012