Abstract: In this paper, non-geodesic winding linear design, finite element simulation and filament winding and hydraulic blasting experiments were carried out on carbon fiber wound composite pressure vessels. The optimal winding parameters of the composite pressure vessel were determined according to the non-geodesical trajectory. Validity of the trajectory was verified as well, the stress and strain values under pressure were analyzed by finite element software ABAQUS. The stress state of the pressure vessel at 35 MPa internal pressure was studied, and its blasting was predicted. The strength is 92.2 MPa. The winding experiment is carried out on a five-axis CNC winding machine. The T800 carbon fiber wound aluminum alloy inner liner is used to complete the development of the composite pressure vessel. The fiber winding layer has 26 layers, and the fibers are arranged neatly and evenly after winding without slippage phenomenon. After curing, the blasting strength is 87.5 MPa, the actual value differs from the predicted value by 5.1%, and the feasibility numerical analysis was verified. In conclusion the present analysis result of both numerical and experimental were in good agreement. Meanwhile, the manufacture foundation for the preparation of eminent performance and prominent specification filament wound products was laid.

Key words: composite materials, pressure vessel, non-geodesic, filament winding, bursting strength