Dynamic and stability analysis of prestressed thin-walled filament wound glass fibre composite cylinders with metal liner

High fiber tension can impart sufficient compressive stresses to protect high-speed rotating cylinders from mechanical failures. Therefore, filament-wound metal cylinders with pre-stressed fiber shells are being investigated to provide radial compressive stress. This study proposes an approach to calculate the stress distributions in composite layers and the compressive stresses in the metal liner under various winding tensions. The stresses in the winding layers and metal liner at the end of the filament winding (FW) process under different tensions are determined using both analytical and finite element methods, showing good agreement between the two approaches. During the FW process, a notable stress relaxation phenomenon was observed: both the fiber stress in wound composite layers and the increase in hoop compressive stress of the metal liner decreased. However, this stress relaxation behavior is unaffected by the fiber tension. The residual tension in the fiber during winding not only reduces the stress levels in the metal liner under highspeed rotation but also maintains the stiffness and buckling stability of the pre-stressed fiber composite cylindrical shell with a metal liner (CCS-ML). Furthermore, as the ratio of winding thickness to diameter increases, the structural stress level gradually decreases and stabilizes under high-speed loads. However, the natural frequency and buckling strength of the structure exhibit significantly different trends. Circumferential winding of the fiber effectively mitigates large deformations of the cylindrical shell under high-speed rotation or external pressure, thereby ensuring safe structural operation.