Numerical and analytical investigation of tensile behavior of non-laminated and laminated CFRP straps. (15th September 2018)

• Record Type: Journal Article
• Authors: Fan, Haifeng; Vassilopoulos, Anastasios P.; Keller, Thomas
• Is Part Of: Composite structures. Volume 200(2018)
• Page Start: 79
• Page End: 87
• Publication Date: 2018-09-15
• Subjects: A. Carbon fibers -- A. Tape -- C. Finite element analysis (FEA) -- C. Analytical modeling; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2018.05.055
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: The tensile behavior of non-laminated and laminated CFRP straps composed of up to 100 layers was numerically and analytically investigated. The failure mode in non-laminated straps changed at 20–30 layers from brittle and sudden rupture of the outermost layer to progressive rupture starting from the innermost layer, due to the different non-uniform strain distributions across the layers. Non-laminated straps showed a significantly higher load-bearing efficiency for layer numbers higher than 20 and exhibited lower sensitivity to tape anisotropy and friction at the strap/pin interface than laminated straps. An empirical model was established to estimate the ultimate load of non-laminated straps with up to 100 layers and an analytical model was derived to predict the load-bearing efficiency of laminated straps, taking into account the strap anisotropy and friction at the strap/pin interfaces.