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FROM:
Jian Zhang (1), Minglu Wang (1), Weicheng Cui (2), Fang Wang (2), Zhengdao Hua (1), Wenxian Tang (3)
(1) School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
(2) Shanghai Engineering Research Center of Hadal Science and Technology, Shanghai Ocean University, Shanghai, China
(3) Jiangsu Provincial Key Laboratory of Advanced Manufacturing for Marine Mechanical Equipment, Jiangsu University of Science and Technology, Zhenjiang, China
“Effect of thickness on the buckling strength of egg-shaped pressure hulls”, Ships and Offshore Structures, 13 (4) (2018), pp. 375-384, https://doi.org/10.1080/17445302.2017.1389253
ABSTRACT: This paper is devoted to a further investigation on a range of externally pressurised egg-shaped pressure hulls. Hulls are 2.561 m long, 1.767 m wide, and have uniform wall thickness varying from 10 to 80 mm with 5 mm increment. Series of numerical simulations and laboratory scale experiments are performed to systematically study the buckling of egg-shaped pressure hulls, along with the effect of wall thickness on the buckling. Volume and mass equivalent spherical pressure hulls are also proposed to make a like-for-like comparison with egg-shaped pressure hulls. The results show that egg-shaped pressure hulls seem to be applicable to deep sea manned/unmanned submersibles, especially to full ocean depth ones (11,000 m). Also, deep pressure hulls tend to buckle in an elastic–plastic regime, which is strongly affected by the wall thickness.
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