Application of scaled boundary finite element method for delamination analysis of composite laminates using cohesive zone modelling. (1st December 2020)

• Record Type: Journal Article
• Authors: Garg, Nikhil; Prusty, B. Gangadhara; Ooi, Ean Tat; Song, Chongmin; Pearce, Garth; Phillips, Andrew W.
• Is Part Of: Composite structures. Volume 253(2020)
• Publication Date: 2020-12-01
• Subjects: Delamination -- Laminated composites -- Cohesive zone model -- Mixed mode -- Scaled boundary finite element method; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2020.112773
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: In this paper, the scaled boundary finite element method (SBFEM) is evaluated for two-dimensional delamination analysis of composite laminates. The delamination phenomenon was studied using cohesive zone modelling (CZM). A bi-linear (triangular) traction-separation law was used to describe the interface behaviour, which was modelled using zero-thickness interface elements. Local arc-length solution technique was used to solve the non-linearity due to the interface behaviour. In this research, pure Mode I and Mode II as well as mixed mode delamination studies have been conducted using the SBFEM formulation. A variety of numerical experiments were performed. Good agreement was observed between the SBFEM simulation and the available numerical and experimental results in the open literature. A comparison between the SBFEM and other traditional methods shows that the presented formulation can solve the same physical problem with a reduction in the computational cost by more than half. The study highlights the advantages of SBFEM over other methods for modelling delamination in composite laminates using CZM.