Stable crack growth in NiTi shape memory alloys: 3D finite element modeling and experimental validation

abstract

• 2019 IOP Publishing Ltd. Crack growth in shape memory alloys under mode-I isothermal loading is simulated using finite element analysis. The experimental data refers to a compact tension (CT) experiment on near-equiatomic nickel-titanium (NiTi). The constitutive model used is calibrated from uniaxial experiments on the same material system. The simulation is run in a three-dimensional CT specimen modeled in Abaqus finite element suite using the virtual crack closure technique and an experimentally determined fracture toughness value. The numerical results provide a quantitative description of the observed stable crack growth in terms of load-displacement curve, deformation distribution, and size and shape of the stress-induced transformation zone close to the crack tip.

authors

• Karaman, Ibrahim

published proceedings

• SMART MATERIALS AND STRUCTURES

author list (cited authors)

• Haghgouyan, B., Jape, S., Baxevanis, T., Karaman, I., & Lagoudas, D. C.

citation count

• 16

complete list of authors

• Haghgouyan, Behrouz||Jape, Sameer||Baxevanis, Theocharis||Karaman, Ibrahim||Lagoudas, Dimitris C

publication date

• June 2019

publisher

• IOP Publishing  Publisher

published in

• Smart Materials and Structures  Journal

keywords

• Crack Growth
• Finite Element Analysis
• NiTi
• PHASE TRANSFORMATION
• Shape Memory Alloys

Digital Object Identifier (DOI)

• 10.1088/1361-665X/ab14a9

start page

• 064001

end page

• 064001

volume

• 28

issue

• 6

URL

• http://dx.doi.org/10.1088/1361-665x/ab14a9