For the burst failure mechanism of filament winding composite pressure shell

a progressive failure model based on continuum damage model was proposed. Fiber breakage

matrix damage and fiber/matrix deboned were considered in this model. Nonlinear shear damage was taken into account as the intralamina mechanics of filament wound composite was different with composite plate. The model was implemented into ABAQUS/Standard through UMAT subroutine and used to simulate the tension failure of notched wound composite specimens. The burst failure process of wound composite shell was simulated. The result showed that the ultimate failure of the wound composite shell was induced by fiber breakage. Fiber breakage mainly occurred in hoop layers and matrix damage mainly occurred in helical layers.