Analysis of millisecond collision of composite high pressure hydrogen storage cylinder |
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| Affiliation: | 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;2. School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China;3. Tight Oil and Gas Project Division, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610056, China;4. Development Division, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, China;5. Shale Gas Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan 610051, China;1. Key Laboratory of Thermal Science and Power Engineering of Ministry of Education (THU), Southeast University, Nanjing, 210096, Jiangsu Province, China;2. Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;3. Sun Yat-sen University, Guangzhou, 510275, GuangdongProvince, China;4. Shenzhen Faroad Intelligent Equipment Co., Ltd, Shenzhen, 518125, Guangdong Province, China;1. Department of Aeronautical Engineering, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil;2. Department of Mechanical Engineering – PMA division, KU Leuven, Leuven, Belgium |
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| Abstract: | For vehicle-mounted high-pressure hydrogen storage cylinders, impact resistance is an important indicator. This work aims at building a model of 70 MPa composite fully wound Ⅳ cylinder around T800 carbon fiber material, investigating the law of transient changes in the body of the bottle under different velocity impacts and the source of risk of bursting. Through millisecond impact analysis, the energy transfer path and transformation trend inside the cylinder are obtained. Meanwhile, it was found that there was a clear pattern of positive correlation between the tensile and compressive stresses generated by the difference between the internal pressure of the bottle and the impact pressure. The final results show that after the impact, the failure occurred firstly at the inner wall of the fiber corresponding to the impact point, and the fiber damage spreads in all directions. The thickness of the failure pavement increases from the inside to the outside. |
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| Keywords: | High pressure gas cylinders Impact Fiber failure Explicit/implicit dynamics |
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