TY - JOUR
T1 - An adaptive floating node based formulation for the analysis of multiple delaminations under high cycle fatigue loading
AU - Trabal, Guillem Gall
AU - Bak, Brian Lau Verndal
AU - Chen, Boyang
AU - Carreras, Laura
AU - Lindgaard, Esben
N1 - Funding Information:
This work is supported by the Talent Management Programme at Aalborg University, Denmark (Internal grant number: 771120) . This support is gratefully acknowledged.
Publisher Copyright:
© 2022 The Author(s)
PY - 2022/9
Y1 - 2022/9
N2 - A novel efficient numerical formulation for the analysis of multiple fatigue-driven delamination cracks is presented. A cohesive zone model is used in combination with an Adaptive Refinement Scheme (ARS) and an Adaptive Floating Node Method (A-FNM) element that refine the model effectively during the analysis. Novel techniques are proposed to track the positions of multiple crack tips and calculate the mode decomposed energy release rates for the individual crack tips using the J-integral. The method has been implemented in a Matlab finite element code and validated with single and multiple delamination cases with varying mode mixities. Comparisons with theoretically based predictions and available experimental data showcase the high accuracy of the method. The presented method lowers the computational time compared to standard, fully refined finite element models by a factor of 4–5.
AB - A novel efficient numerical formulation for the analysis of multiple fatigue-driven delamination cracks is presented. A cohesive zone model is used in combination with an Adaptive Refinement Scheme (ARS) and an Adaptive Floating Node Method (A-FNM) element that refine the model effectively during the analysis. Novel techniques are proposed to track the positions of multiple crack tips and calculate the mode decomposed energy release rates for the individual crack tips using the J-integral. The method has been implemented in a Matlab finite element code and validated with single and multiple delamination cases with varying mode mixities. Comparisons with theoretically based predictions and available experimental data showcase the high accuracy of the method. The presented method lowers the computational time compared to standard, fully refined finite element models by a factor of 4–5.
KW - Adaptive refinement
KW - Cohesive Zone Modeling
KW - Delamination
KW - Fatigue
KW - Floating Node Method
KW - Multiple delamination
UR - http://www.scopus.com/inward/record.url?scp=85133594225&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2022.107036
DO - 10.1016/j.compositesa.2022.107036
M3 - Journal article
AN - SCOPUS:85133594225
SN - 1359-835X
VL - 160
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 107036
ER -