A benchmark study of simulation methods for high-cycle fatigue-driven delamination based on cohesive zone models. (15th March 2017)

• Record Type: Journal Article
• Authors: Bak, B.L.V.; Turon, A.; Lindgaard, E.; Lund, E.
• Is Part Of: Composite structures. Volume 164(2017)
• Page Start: 198
• Page End: 206
• Publication Date: 2017-03-15
• Subjects: Delamination -- Fatigue -- Cohesive zone models -- Benchmark study; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2016.11.081
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: New benchmark studies of six different computational methods for simulating fatigue-driven delamination cracks in composite laminated structures under cyclic loading are presented. All the studied methods are based on cohesive zone models and are aimed at high-cycle fatigue simulation. The benchmark studies describe and compare the traction-separation response in the cohesive zone and the transition phase from quasi-static to fatigue loading for each method. Furthermore, the accuracy of the predicted crack growth rate is studied and compared. Studies of the performance of each method in non-self-similar crack growth problems are presented and it is shown that there is a large difference in the accuracy of each method. Finally, studies of the dependency and sensitivity to different quasi-static material parameters and method specific fitting parameters are presented.