深海无人探测外压容器的优化设计及稳定性分析

Optimum design and stability analysis of the self-service exploring vessel with external pressure under deep sea

利用有限元方法系统分析日本钛制万米深海无人探测容器(Shinkai)的外形及材料优化,计算了弹性与塑性情况容器失稳时的临界应力.结果表明容器加强肋的微小变化以及复合材料铺层方式的改变可使由钛-复合材料(CFRP)组成的三明治式压力容器比全钛合金制压力容器的比强度增加22.5%,容器的破坏主要由塑性失稳控制.

This paper systematically analyses the optimum of configuration and materials of a self-service exploring vessel under the deep sea of 10,000 meter made in Japan. The elastic and plastic unstable collapse pressure is calculated by using the finite element method The results show that the little change of configuration of the strength-ring and the sequence of stacking of Carbon Fiber Reinforced Composites （CFRP）can make the special strength of sandwich-mode vessel made by Ti-CFRP increase to 22.5% compared with the Ti-alloy one, and the collapse of vessel is mainly controlled by the elastic-plastic unstable pressure.