A numerical investigation into size effects in centre-notched quasi-isotropic carbon/epoxy laminates
Source abstract
Abstract
Numerical modelling of scaled centre-notched [45/90/-45/0]4s carbon/epoxy laminates was carried out. The in-plane dimensions of the models were scaled up by a factor of up to 16. A Finite Element (FE) method using the explicit code LS-Dyna was applied to study the progressive damage development at the notch tips. Cohesive interface elements were used to simulate splits within plies and delaminations between plies. A failure criterion based on Weibull statistics was used to account for fibre failure. There is a good correlation between the numerical and experimental results, and the scaling trend can be explained in terms of the growth of the notch tip damage zone. The modelling gives new insights into the damage development in the quasi-isotropic laminates with sharp cracks, specifically, the growth of splits, delaminations and local fibre breakage.
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Research context
OpenAlex topics: Mechanical Behavior of Composites · Fatigue and fracture mechanics · Composite Structure Analysis and Optimization
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References (25)
Show source-provided references
1. Fracture scaling parameters of inhomogeneous microstructure in composite structures10.1016/0266-3538(95)00022-4 ↗
2. Scaling global fracture behavior of structures-sized laminated composites10.1023/A:1023351115322 ↗
3. In-plane fracture of laminated fiber reinforced composites with varying fracture resistance: experimental observations and numerical crack propagation simulations10.1016/j.ijsolstr.2009.12.006 ↗
4. A finite fracture mechanics model for the prediction of the open-hole strength of composite laminates10.1016/j.compositesa.2012.03.004 ↗
5. Modelling discrete failures in composites with interface elements10.1016/j.compositesa.2010.02.011 ↗
6. A progressive damage model for laminated composites containing stress concentrations10.1177/002199838702100904 ↗
7. Failure criteria for FRP laminates10.1177/0021998305046452 ↗
8. A non-local approach to simulation of damage in laminated composites
9. Examination of ply cracking in composite laminates with open holes: a moiré interferometric and numerical study10.1016/j.compositesa.2005.06.004 ↗
10. Formulation and implementation of decohesion elements in an explicit finite element code10.1016/j.compositesa.2005.06.007 ↗
11. Accurate simulation of delamination growth under mixed-mode loading using cohesive elements: definition of interlaminar strengths and elastic stiffness10.1016/j.compstruct.2010.01.012 ↗
12. An energy release rate approach for stable crack growth in free-edge delamination problem10.1177/002199837701100409 ↗
13. Local delamination in laminates with angle ply matrix cracks. Part I: tension tests and stress analysis
14. Delamination growth and residual properties of cracked orthotropic laminates under tensile loading10.1106/089270502022859 ↗
15. Damage mechanics of composite materials: II – a damaged-based notched strength model10.1016/0266-3538(90)90078-J ↗
16. The role of delamination in strength, failure mechanism and hole size effect in open hole tensile tests on quasi-isotropic laminates10.1016/j.compositesa.2008.12.013 ↗
17. An experimental and numerical investigation into the damage mechanisms in notched composites10.1016/j.compositesa.2009.02.021 ↗
18. Numerical investigation of progressive damage and the effect of layup in overheight compact tension tests10.1016/j.compositesa.2012.03.002 ↗
19. An experimental investigation into size effects in quasi-isotropic carbon/epoxy laminates with sharp and blunt notches10.1016/j.compscitech.2014.06.002 ↗
20. A concise interface constitutive law for analysis of delamination and splitting in composite materials and its application to scaled notched tensile specimens10.1002/nme.1842 ↗
21. Size effects in the testing of fibre-composite materials10.1016/S0266-3538(99)00053-6 ↗
22. Size effects in unnotched tensile strength of unidirectional and quasi-isotropic carbon/epoxy composites10.1016/j.compstruct.2007.06.002 ↗
23. Edwalds HL, Wanhill RJH. Fracture mechanics: Edward Arnold, Delftse Uitgevers Maatschappij; 1984.
24. Measurement of the in situ ply fracture toughness associated with mode I fibre tensile failure in FRP. Part I: data reduction10.1016/j.compscitech.2009.12.016 ↗
25. Newman JC. Fracture analysis of various cracked configurations in sheet and plate materials. Properties Related to Fracture Toughness ASTM STP 605; 1976. p. 104–23.10.1520/STP27802S ↗