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Experimental and analytical investigations of the flexural behavior of hollow ±55° filament wound GFRP tubes
https://orcid.org/0000-0001-8194-1416
Abstract The behavior of ±55° filament wound glass fiber-reinforced polymer (GFRP) tubes under flexural loading was examined experimentally and analytically. A total of 15 tubes were tested under four-point bending. The main test parameter was the ratio of inner diameter (D) to wall thickness (t), (D/t) ratio. The inner diameters of the tubes were 76 and 203 mm, while their wall thicknesses varied from 1.7 to 6.7 mm, giving D/t ratios of 20–75. All tests exhibited a nonlinear load-deflection response and a similar failure mechanism, namely a progressive tensile weakening until a sudden compression failure occurs. The tests showed that the moment capacity of the tubes increased with both tube diameter and nominal pressure rating. The tubes also exhibited a prolonged post-peak behavior. An iterative cross-sectional analytical technique was developed to model both the moment-curvature and load-deflection behavior of the tubes. The model accounts for the potential failure due to local buckling as well as compression failure and was shown to accurately predict the behavior of the tubes. A parametric study was performed to find the moment capacity of tubes with ratios beyond the range tested and was used to establish a simple design equation for moment capacity.
Highlights Filament wound glass fiber-reinforced polymer tubes were tested under flexural load. ±55° glass fiber-reinforced polymer tubes exhibit a nonlinear flexural behavior. Tubes experienced progressive tensile failure before ultimate compression failure. Tubes experienced prolonged post-peak load-deflection behavior. A cross sectional model was developed to predict the tube flexural behavior.
Experimental and analytical investigations of the flexural behavior of hollow ±55° filament wound GFRP tubes
https://orcid.org/0000-0001-8194-1416
Abstract The behavior of ±55° filament wound glass fiber-reinforced polymer (GFRP) tubes under flexural loading was examined experimentally and analytically. A total of 15 tubes were tested under four-point bending. The main test parameter was the ratio of inner diameter (D) to wall thickness (t), (D/t) ratio. The inner diameters of the tubes were 76 and 203 mm, while their wall thicknesses varied from 1.7 to 6.7 mm, giving D/t ratios of 20–75. All tests exhibited a nonlinear load-deflection response and a similar failure mechanism, namely a progressive tensile weakening until a sudden compression failure occurs. The tests showed that the moment capacity of the tubes increased with both tube diameter and nominal pressure rating. The tubes also exhibited a prolonged post-peak behavior. An iterative cross-sectional analytical technique was developed to model both the moment-curvature and load-deflection behavior of the tubes. The model accounts for the potential failure due to local buckling as well as compression failure and was shown to accurately predict the behavior of the tubes. A parametric study was performed to find the moment capacity of tubes with ratios beyond the range tested and was used to establish a simple design equation for moment capacity.
Highlights Filament wound glass fiber-reinforced polymer tubes were tested under flexural load. ±55° glass fiber-reinforced polymer tubes exhibit a nonlinear flexural behavior. Tubes experienced progressive tensile failure before ultimate compression failure. Tubes experienced prolonged post-peak load-deflection behavior. A cross sectional model was developed to predict the tube flexural behavior.
Experimental and analytical investigations of the flexural behavior of hollow ±55° filament wound GFRP tubes
https://orcid.org/0000-0001-8194-1416
Abstract The behavior of ±55° filament wound glass fiber-reinforced polymer (GFRP) tubes under flexural loading was examined experimentally and analytically. A total of 15 tubes were tested under four-point bending. The main test parameter was the ratio of inner diameter (D) to wall thickness (t), (D/t) ratio. The inner diameters of the tubes were 76 and 203 mm, while their wall thicknesses varied from 1.7 to 6.7 mm, giving D/t ratios of 20–75. All tests exhibited a nonlinear load-deflection response and a similar failure mechanism, namely a progressive tensile weakening until a sudden compression failure occurs. The tests showed that the moment capacity of the tubes increased with both tube diameter and nominal pressure rating. The tubes also exhibited a prolonged post-peak behavior. An iterative cross-sectional analytical technique was developed to model both the moment-curvature and load-deflection behavior of the tubes. The model accounts for the potential failure due to local buckling as well as compression failure and was shown to accurately predict the behavior of the tubes. A parametric study was performed to find the moment capacity of tubes with ratios beyond the range tested and was used to establish a simple design equation for moment capacity.
Highlights Filament wound glass fiber-reinforced polymer tubes were tested under flexural load. ±55° glass fiber-reinforced polymer tubes exhibit a nonlinear flexural behavior. Tubes experienced progressive tensile failure before ultimate compression failure. Tubes experienced prolonged post-peak load-deflection behavior. A cross sectional model was developed to predict the tube flexural behavior.
Experimental and analytical investigations of the flexural behavior of hollow ±55° filament wound GFRP tubes
Betts, Dillon (author) / Sadeghian, Pedram (author) / Fam, Amir (author)
Thin-Walled Structures ; 159
2020-10-27
Article (Journal)
Electronic Resource
English
GFRP tubes , Angle-ply , Flexure , Experimental , Analysis , Nonlinear
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