Analysis of the behavior of type III composite pressure vessel under bullet impact
کلمات کلیدی:
Composite tank, bullet, numerical solution, impact testچکیده
Pressure tanks are designed to store high pressure fluids and are widely used in
various industries. One of the uses of these tanks is to use them as compressed natural gas tanks, which are widely used in transportation industries. Due to reduction of weight and increase of strength, composite materials is widely used in the construction of these tanks. In this thesis, the behavior of the pressure vessel structure against the impact caused by the bullet will be numerically analyzed. First, a standard composite tank is designed according to previous researches in Abaqus software, and then the impact caused by the bullet will be simulated. Finally the strength of this tank against changes in parameters such as winding angle, thickness of composite material, type of fibers and etc will be investigated .and an optimal mode for the construction of these tanks will be introduced.Through the investigations, it was found that the composite pressure tank made of CFRP material has more strength than other materials. In addition, it was determined that the composite tank should be made at the angle of 55 and -55 fibers along with the lining and the thickness of 1.524 mm. In fact, in this research, the effect of various variables such as thickness of composite layers, angle of fibers, type of fibers, and presence of lining was investigated simultaneously, and the effect of each of these variables on the strength of these tanks was investigated.
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