CAJ | 학술논문

通过外压屈曲计算及外压试验，研究了某固体火箭发动机锥形壳体的外压稳定性。通过外压屈曲计算，得到了壳体的外压临界载荷、屈曲失稳波形、轴向位移以及径向位移随外压载荷的变化规律。对带加强环壳体也进行了外压稳定性分析。对比计算结果发现，虽然壳体的外压承受能力较低，但加强环可有效地提高壳体的外压承载能力。之后，还分析了在加强环总长度不变的情况下，不同加强环分布形式壳体的外压承载能力，得出均布4个加强环的壳体为较优选择。壳体的外压试验所得临界外压载荷与计算结果较吻合。
통과외압굴곡계산급외압시험，연구료모고체화전발동궤추형각체적외압은정성。통과외압굴곡계산，득도료각체적외압림계재하、굴곡실은파형、축향위이이급경향위이수외압재하적변화규률。대대가강배각체야진행료외압은정성분석。대비계산결과발현，수연각체적외압승수능력교저，단가강배가유효지제고각체적외압승재능력。지후，환분석료재가강배총장도불변적정황하，불동가강배분포형식각체적외압승재능력，득출균포4개가강배적각체위교우선택。각체적외압시험소득림계외압재하여계산결과교문합。
Stability of solid rocket motor's conical shell under external pressure was investigated through buckling analysis and tests. The variation buckle load, mode, axial displacement and radial displacement curves with external pressure were obtained from buckling analysis of the shell. The buckling analysis on shell with reinforcement ring was also made. Calculated results reveal that reinforcement ring improves the stability of shell under external pressure. The buckling analysis in different distribution of reinforce-ment ring was also made. And the calculated results reveal that the shell with 4 reinforcement ring is a good choice when the length of reinforcement ring is a constant. Critical buckling load obtained from tests agrees well with the calculated results.