Energy absorption of foam-filled circular tubes with braided composite walls |
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| Institution: | 1. Univ Paris Est Creteil, CNRS, MSME, F-94010 Creteil, France;2. Univ Gustave Eiffel, MSME, F-77447 Marne-la-Vallée, France;3. Univ Paris Est Creteil, CNRS, ICMPE, F-94010 Creteil, France;4. MSME, Univ Gustave Eiffel, UPEC, CNRS, F-77454 Marne-la-Vallée, France;1. Department of Mechanical Engineering, TEMA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;2. Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, R. Boškovića 32, HR-21000 Split, Croatia;3. Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, SI-2000 Maribor, Slovenia;1. School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China;2. Key Laboratory of Traffic Safety on Track, Ministry of Education, Changsha, Hunan, China;3. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Changsha, Hunan, China;4. National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Changsha, Hunan, China;5. Department of Mechanical Engineering, University of New Orleans, USA;1. Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;2. College of Engineering, Al-Muthanna University, Samawah, Iraq;3. Faculty of Science Engineering and Built Environment, Deakin University, Geelong, VIC 3220, Australia;4. Department of Mechanical Engineering, KAIST, Daejeon 305-701, Korea |
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| Abstract: | Braided glass-fibre/epoxy circular tubes with polymer foam cores are loaded in tension and in compression, and the energy of deformation is measured. Theoretical models of tube deformation are developed, and are used to predict the energy absorption as a function of tube wall strength, the ratio of tube wall thickness to tube diameter, and the density of the foam. The energy per unit mass and energy per unit volume are optimised with respect to the relative density and geometry. It is found that foam-filled braided circular tubes exhibit promising energy absorbing characteristics, due to a combination of energy absorption by the polymeric foam core and by the glass/epoxy braided tube. |
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