Abstract: In order to study the mechanical property of filament-wound sandwich composite cylinder, the axial compression test of sandwich composite cylinder was carried out, and the load-displacement curve and the strain regularity were obtained. Then, based on the classical laminated plate theory, the skins of the sandwich composite cylinder were homogenized and equivalented of unidirectional fiber reinforced composite materials. An effective simulation method was established using ABAQUS software to obtain the load-displacement curve and strain distribution rule. Finally, the simulated and experimental results of load-displacement curve and strain were compared. Results show that the calculated results fit well with the experimental results, the axial stiffness error is 10.69%, and the maximum error of strain is 12.88%, which verified the reliability of the FEM method, providing the foundation for optimal design of composite sandwich cylinders.

Key words: filament-wound, composite, sandwich cylinders, axial compression test