Finite element analysis of the plane strain crack-tip mechanical fields in pseudoelastic shape memory alloys Conference Paper uri icon

abstract

  • The plane strain mechanical fields near a stationary crack tip in a pseudoelastic shape memory alloy (SMA) are analyzed via the finite element method. The small scale transformation assumption is employed for the calculations using displacement boundary conditions on a circular region that encloses the stress-induced phase transformation zone. The constitutive law used adopts the classical rate-independent small strain flow theory for the evolution equations of both the transformation and plastic strains. Results on the size and shape of the stress-induced transformation and plastic zone formed near the stationary crack are obtained and a fracture toughness criterion based on the J-integral is discussed in view of the observed path-dependence of J. Moreover, the obtained results are discussed in relation to results for stationary cracks in conventional elasticplastic materials. © 2012 IOP Publishing Ltd.

published proceedings

  • Smart Materials and Structures

author list (cited authors)

  • Baxevanis, T., Chemisky, Y., & Lagoudas, D. C

citation count

  • 53

complete list of authors

  • Baxevanis, T||Chemisky, Y||Lagoudas, DC

publication date

  • August 2012