TY - JOUR
T1 - On the effects of unilateral boundary conditions on the crack growth rate under cycling bending loads
AU - Pucillo, Giovanni Pio
AU - Esposito, Luca
AU - Leonetti, Davide
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Sometimes, structural components experience service conditions that have not taken into account at the design stage. In this study, the effects of the boundary conditions on the crack propagation life have been evaluated using the modified Virtual Crack Closure Technique for a surface crack existing at the root of a shoulder fillet notch in a circular stepped bar under bending. The results show that the presence of a unilateral boundary condition at the shoulder fillet notch significantly influences the SIF's and therefore the number of cycles to failure, but the shape of the crack front does not change during propagation.
AB - Sometimes, structural components experience service conditions that have not taken into account at the design stage. In this study, the effects of the boundary conditions on the crack propagation life have been evaluated using the modified Virtual Crack Closure Technique for a surface crack existing at the root of a shoulder fillet notch in a circular stepped bar under bending. The results show that the presence of a unilateral boundary condition at the shoulder fillet notch significantly influences the SIF's and therefore the number of cycles to failure, but the shape of the crack front does not change during propagation.
KW - Fatigue Crack Growth
KW - Finite Element Method
KW - LEFM
KW - SIF
KW - Virtual Crack Closure Technique
UR - http://www.scopus.com/inward/record.url?scp=85062617705&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2019.02.038
DO - 10.1016/j.ijfatigue.2019.02.038
M3 - Article
AN - SCOPUS:85062617705
SN - 0142-1123
VL - 124
SP - 245
EP - 252
JO - International Journal of Fatigue
JF - International Journal of Fatigue
ER -