用ANSYS软件对固体发动机壳体后封头进行了外压屈曲分析。结果表明,在可承受相同内压条件下金属壳体后封头比复合材料壳体后封头有更高的承受外压能力;壳体后接头、喷管固定体对后封头承外压能力有加强作用;壳体后开口直径越大,临界屈曲载荷越大。 The buckling analysis of the rear head of the shell of the solid engine was carried out by ANSYS software. The results show that under the condition of the same internal pressure, the rear head of the metal shell can withstand the external pressure more than the rear head of the composite shell; Ability to strengthen the role of the shell opening the larger the diameter, the greater the critical buckling load.