TY - JOUR
T1 - Analysis of two-dimensional fatigue crack propagation in thin aluminum plates using the Paris law modified by a closure concept
AU - Sato, Marcel
AU - Moura, Lucas S.
AU - Galvis, Andres F.
AU - Albuquerque, Eder L.
AU - Sollero, Paulo
PY - 2019/9
Y1 - 2019/9
N2 - A general procedure is applied to analyze fatigue crack propagation in isotropic materials under mixed mode conditions, the Paris law modified by a closure concept. The dual boundary element method (DBEM) provides an stress and strain analysis on the solid, with reliable results for the mechanical fields in the region near to the crack tip. For validating purposes, thin plates made of 2024-T3 aluminum alloy are used with two horizontal notches. Throughout the J-Integral the stress intensity factors (SIFs) can be evaluated and with digital image processing, the displacement information from the experimental tests is obtained. Then, the effect of the crack closure during unloading is considered to attain remarkable numerical results compared to those experimentally collected, showing the feasibility of the proposed model.
AB - A general procedure is applied to analyze fatigue crack propagation in isotropic materials under mixed mode conditions, the Paris law modified by a closure concept. The dual boundary element method (DBEM) provides an stress and strain analysis on the solid, with reliable results for the mechanical fields in the region near to the crack tip. For validating purposes, thin plates made of 2024-T3 aluminum alloy are used with two horizontal notches. Throughout the J-Integral the stress intensity factors (SIFs) can be evaluated and with digital image processing, the displacement information from the experimental tests is obtained. Then, the effect of the crack closure during unloading is considered to attain remarkable numerical results compared to those experimentally collected, showing the feasibility of the proposed model.
KW - Boundary element method
KW - Closure model
KW - Digital image correlation
KW - Fatigue crack propagation
UR - http://www.scopus.com/inward/record.url?scp=85068014030&partnerID=8YFLogxK
U2 - 10.1016/j.enganabound.2019.06.008
DO - 10.1016/j.enganabound.2019.06.008
M3 - Article
AN - SCOPUS:85068014030
SN - 0955-7997
VL - 106
SP - 513
EP - 527
JO - Engineering Analysis with Boundary Elements
JF - Engineering Analysis with Boundary Elements
ER -