Buckling of longan-shaped shells under external pressure. (July 2018)

• Record Type: Journal Article
• Authors: Zhang, J.; Wang, W.M.; Cui, W.C.; Tang, W.X.; Wang, F.; Chen, Y.
• Is Part Of: Marine structures. Volume 60(2018)
• Page Start: 218
• Page End: 225
• Publication Date: 2018-07
• Subjects: Shell of revolution -- Dried longan -- Buckling behaviour -- Collapse pressure; Naval architecture -- Periodicals; Offshore structures -- Periodicals; Architecture navale -- Périodiques; Structures offshore -- Périodiques; Naval architecture; Offshore structures; Periodicals; 620.4162
• DOI: 10.1016/j.marstruc.2018.04.002
• Languages: English
• ISSNs: 0951-8339

Abstract

Abstract: This paper carries out an experimental and numerical study on the buckling behavior of a biologically evolving longan-shaped shell under external pressure. Such a shape, following Cassini oval formula, is determined based on the measurements of 171 actual dried longan shells. On this basis, three nominally identical longan-shaped shells with the shape index of 0.11 are fabricated using stamping and welding process, measured for geometry, slowly tested to destruction, and numerically evaluated for their buckling behaviour. A good agreement between experiments and numerical evaluations is obtained. Highlights: Dried longans are tested to destruction and measured for geometry and thickness. Buckling of longan-shaped shells are experimentally and numerically studied. Good agreement between experiments and numerical evaluations is obtained.