To decrease the stress concentration on the dome of composite case, and improve the ability of the
composite case, the key problem is how to reinforce the weakness of case and using which method to reinforce it. The
椎150 mm case of carbon fiber composites is studied in this paper, on the basis of theoretical analysis and finite ele鄄
ment analysis, using carbon cloth and filament winding to reinforce dome and around equator of the case. As a result,
the effect of filament winding reinforcement is better than carbon cloth reinforcement,case characteristic factor reaches
to 48. 5km, stress equilibrium up to 0. 95, developed fiber strength by 3 378. 1 MPa to 4 058. 4 MPa.