Özet:

Hydrogen energy eliminates the disadvantages such as air pollution and noise pollution caused by diesel train sets, as well as the negative effects such as expensive electrification infrastructure and visual pollution required by electric train sets. Against these positive properties, hydrogen must be stored under high pressure. In this study, the use of hydrogen as an alternative energy source in railway vehicles and the high-speed impact resistance of hydrogen tubes were investigated by the finite element method. The effect of impact loading on Carbon Fiber Reinforced Plastic (CFRP) composite tubes without and with high internal pressure has been investigated by FEM simulation for this purpose. The composite tube which has an Aluminum cylinder and wound by carbon fiber was simulated by using the 3-D model. MARC-Mentat commercial code has been selected as a computational tool. The geometry of the cylinder has been generated using Mentat pre-post interface software. The material properties of the Aluminum 6061T liner and TORAY T-700SC + Epoxy composite layers have been included in the simulations as isotropic and orthographic, respectively. The dome region of the vessel has not been included in the simulations. The model of the simulation has been created by considering the real experiment which has been conducted by another researcher. The results of the simulations show that some zones under the impactor damage would face compressions stresses rather than tensional deformation, which is generally believed.

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