Abstract
Abstract This paper presents an experimental investigation of overall buckling behaviour of carbon fibre reinforced plastic (CFRP) tubes with different off-axis ply orientations. A series of specimens are designed and prepared with stacking sequences [0 ∘ 4/±θ∘], with θ corresponding to either 0, 90, 45 or 60. Axial compression tests with effective end-reinforcement and hinge support are performed to investigate the overall buckling behaviour. With respect to the future design and application of CFRP tubes with this type of stacking sequence, column curves for each stacking sequences and all test data are fitted based on Perry-Robertson formula. With respect to the high stress level in the relatively short CFRP tube that facilitates the development of defects, test data present high levels of discreetness. We propose a strategy for engineering safe design in which a reduction factor is added to the original reduction factor based on statistical analysis when the universal slenderness ratio is less than 2.
Highlights
Fibre reinforced plastic (FRP) materials are attractive for engineering structures due to their excellent properties, related to high strength, light weight, and anti-corrosion behaviour [1, 2]
This paper presents an experimental investigation of overall buckling behaviour of carbon fibre reinforced plastic (CFRP) tubes with different off-axis ply orientations
We propose a strategy for engineering safe design in which a reduction factor is added to the original reduction factor based on statistical analysis when the universal slenderness ratio is less than 2
Summary
Fibre reinforced plastic (FRP) materials are attractive for engineering structures due to their excellent properties, related to high strength, light weight, and anti-corrosion behaviour [1, 2]. Recent studies on FRP compression profiles mainly focus on the profiles of pultruded glass-fibre reinforced plastics (GFRP) with different cross sections shapes such as channel sections [19], ‘Universal’ and ‘Box’ [20], ‘I-shaped’ [21], and circular cross sections [22, 23]. These studies indicate that the Euler formula is accurate for components with high slenderness ratio λ. The plugs were used as end closures inside the tube end corners
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