Mechanical model and mechanical property analysis of fibre-reinforced hybrid composite pipes |
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| Affiliation: | 1. School of Mechanical Engineering, Yangtze University, Jingzhou, 434022, PR China;2. Sinopec Engineering Incorporation, BeiJing, 100000, PR China;1. School of Civil Engineering, Southeast University, China, #2 Southeast University Road, Jiangning District, Nanjing, China;2. Norwegian Geotechnical Institute, Sognsveien 72, 0855, Oslo, Norway;3. Shell International Exploration and Production Inc., 150 N. Dairy Ashford Road, Houston, TX, 77079, USA;4. Shell International Exploration and Production Inc., 150 N. Dairy Ashford Road, Houston, TX, 77079, USA;5. Norwegian University of Science and Technology (NTNU), Trondheim, Norway;1. College of Aerospace and Civil Engineering, Harbin Engineering University, China;2. Marine Renewable Energy Laboratory, Dept. of Naval Architecture & Marine Engineering, University of Michigan, 2600 Draper Road, Ann Arbor, MI, 48109-2145, USA;3. Department of Mechanical Engineering, University of Michigan, USA;4. Vortex Hydro Power, Ann Arbor, MI, USA;1. Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education, Wuhan, 430063, China;2. School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan, 430063, China;3. Marine Design & Research Institute of China, Shanghai, 200011, China;1. College of Field Engineering, Army Engineering University of PLA, Nanjing, Jiangsu, China;2. China Ship Scientific Research Center, Wuxi, 214082, China;1. Department of Maritime and Transport Technology, Delft University of Technology (TU Delft), Delft, the Netherlands;2. Maritime Research Institute Netherlands (MARIN), Wageningen, the Netherlands;3. DITEN, University of Genova, Genova, Italy |
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| Abstract: | Compared to conventional fibre-reinforced composite pipes, fibre-reinforced hybrid composite pipes are more complex and are characterised by the use of hybrid fibres, hybrid matrices, and multiple fibre winding angles. In this study, based on the mechanical model of conventional fibre-reinforced composite pipes, the cross-section division method, the radial pressure on the adjacent layer by spiral wound rope structures, and the calculation method of axial force in each layer were improved. Furthermore, the von Mises stresses in each layer were calculated to discriminate the failure to establish a mechanical model of fibre-reinforced hybrid composite pipes with any number of reinforced layers under axial tension, internal pressure, and external pressure. Experimental data and the finite element method (FEM) were used to verify the reliability of the established model, with the axial tensile mechanical properties analysed based on the established model. The results showed that the large-angle fibres no longer withstood the axial tensile load when the winding angle of the large-angle fibres was greater than 45°. The matrices yielding was much earlier than the fibre breakage. The matrices hybrid methods have a large influence on the axial tensile properties of fibre-reinforced hybrid composite pipes, and improving the material properties of the inner and outer liners can significantly improve the axial tensile properties of fibre-reinforced hybrid composite pipes. |
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| Keywords: | Fibre-reinforced hybrid composite pipes Mechanical model Mechanical properties |
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