Buckling of an egg-shaped shell with varying wall thickness under uniform external pressure. (18th August 2019)

• Record Type: Journal Article
• Authors: Zhang, Jian; Hua, Zhengdao; Wang, Fang; Tang, Wenxian
• Is Part Of: Ships and offshore structures. Volume 14:Number 6(2019)
• Page Start: 559
• Page End: 569
• Publication Date: 2019-08-18
• Subjects: Egg-shaped shell -- atypical shell of revolution -- varying wall thickness -- external pressure -- buckling; Ships -- Periodicals; Offshore structures -- Periodicals; Marine engineering -- Periodicals; Marine engineering -- Technological innovations -- Periodicals; Ocean engineering -- Periodicals; Ocean engineering -- Technological innovations -- Periodicals; 623.8
• DOI: 10.1080/17445302.2018.1524553
• Languages: English
• ISSNs: 1744-5302

Abstract

ABSTRACT: The paper is devoted to a kind of egg-shaped shell with varying wall thickness subjected to uniform external pressure. The numerical buckling performances of several such shells are presented, which are compared with corresponding equivalent egg-shaped shells with uniform wall thickness. It is indicated that the buckling capacity of egg-shaped shells with varying wall thickness is greatly improved; furthermore, such shells are less sensitive to initial geometric imperfections than those with uniform wall thickness. To validate the proposed numerical approach, three nominally identical egg-shaped shells is tentatively fabricated, accurately measured, slowly tested, and numerically studied. A good agreement between experiments and computations are obtained.