Buckling of Cassini Oval Pressure Hulls Subjected to External Pressure

作     者：TANG Wen-xian WANG Wei-min ZHANG Jian WANG Shu-yan 

作者机构：Jiangsu Provincial Key Laboratory of Advanced Manufacturing for Marine Mechanical Equipment Jiangsu University of Science and Technology Zhenjiang 212003 China School of Mechanical Engineering Jiangsu University of Science and Technology Zhenjiang 212003 China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2019年第33卷第4期

页      面：503-508页

核心收录：

学科分类：07[理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51709132) the Natural Science Foundation of Jiangsu Province(Grant No.BK20150469) the Postgraduate Research&Practice Innovation Program of Jiangsu Province(Grant No.KYCX18_2310) 

主　　题：pressure hull Cassini oval shell shape index buckling behaviour external pressure 

摘      要：The paper focuses on Cassini oval pressure hulls under uniform external pressure. The Cassini oval pressure hull is proposed based on the shape index of Cassini oval. The buckling of a series of Cassini oval pressure hulls with the shape index of 0.09–0.30 and one spherical pressure hull with the diameter of 2 m is devoted. Such hulls are numerically studied in the case of constant volume, material properties, and wall thickness. The results show that Cassini oval pressure hulls with the shape index of 0.10–0.11 can resist about 4% more external pressure than the spherical one. This deviates from the classical mechanics conclusion that spherical shell is the optimal shape for underwater pressure resistant structures.