CAJ | 학술논문

外压薄壁圆筒水密舱在工况条件下能够安全承压的必要条件是构件具有足够的强度和刚度，否则构件加载后将分别发生屈服破坏和失稳。其他条件不变时构件的临界长度决定了失稳临界压力大小。因此，工程设计前首先要对构件强度和刚度进行研究和仿真。
외압박벽원통수밀창재공황조건하능구안전승압적필요조건시구건구유족구적강도화강도，부칙구건가재후장분별발생굴복파배화실은。기타조건불변시구건적림계장도결정료실은림계압력대소。인차，공정설계전수선요대구건강도화강도진행연구화방진。
For a thin thickness cylinder cabin under external pressure, it is essential in the normal condition to ensure the components of the cabin having enough strength and stiffness. The components under the normal pressure will yield if no enough strength and they will buckle if no enough stiffness. The critical lengths of the components decide their crit-ical pressures when the components keep in original conditions. Therefore, it is right and necessary to research and to simulate strength and stiffness of the components first, and then to get the theoretical basis for engineering design.