Abstract
Filament-wound composite has distinct interfaces differing from conventional metals, and the fracture at these interfaces (macroscopic fracture) causes a remarkable decrease in strength and stiffness.
In this investigation, the behavior of macroscopic fracture (delamination) of filament-wound tubes was observed underr static lateral compression and the crack initiation at the end cross-sections of tubes was examined by the finite element method using the polar-anisotropy.
The followings were revealed from the results.
(1) The fracture behavior in filament-wound tubes under lateral compressive load was affected by winding-angle of reinforcement, and various fracture modes were observed for the specimens with variable winding-angles.
(2) On the numerical analysis, the domains involving microscopic fracture were produced at different locations predictable from the anisotropic or isotropic properties. Therefore, for the design of filament-wound tubes the anisotropic effect should be taken into consideration.
