Non-geodetic winding strength of T700 carbon fiber reinforced resin composite cylinder head

Using differential geometry theory and the fourth-order Runge-Kutta methods to solve non-geodetic winding angle differential equation of T700 carbon fiber reinforced resin composite (CFRP) in cylinder head, a stable non-geodetic winding trajectory was obtained. Using the finite element simulation software to build the finite element model of T700 (CFRP) winding cylinder, the influence of different non-geodetic trajectories on the strength of T700 CFRP winding cylinder under working pressure was analyzed. The progressive damage model was used to analyze the law of burst pressure. For T700 CFRP winding cylinder with head of 50 mm, the T700 winding cylinder bearing capacity is the strongest when the slippage coefficient is 0.2, which is 7 MPa higher, about 6.4%, compared with T700 CFRP geodesic winding cylinder. For geodesic winding cylinder with head of 160 mm, the T700 CFRP winding cylinder bearing capacity is the strongest when the slippage coefficient is 0.2, which is 6 MPa higher, about 11.5%, compared with T700 CFRP geodesic winding cylinder. The results show that the optimized winding design can meet the basic requirements of the winding process, improve the structural mechanical properties of the T700 CFRP winding cylinder, and provide reasonable suggestions for the actual winding process.