Abstract: A layered solid element in ANSYS was used to simulate the filament winding composite dome with ellipsoidal ration 1.7, and the numerical analysis results of the deformation of the dome agreed with hydrostatic test results. Considering the filament winding composite dome with ellipsoidal ration 2, the research reveals that the law of the strain along the fiber present first increases then decreases from the fore opening to equatorial. Meanwhile, the maximum displacement located in the middle along meridional of fore dome. In addition, ellipsoidal ration 1.7 of the fore dome, the strain subjected to internal pressure with ellipsoidal ration 2 is more uniform, which corresponds to euuilateral stress dome of filament winding composite.

Key words: filament winding composite, fore dome, ellipsoidal ration