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Vol. 58 (2017) No. 2 June n. 192


Theoretical, Numerical and Experimental Analysis of Polygonal Buckling Shapes of Spherical Shells Subjected to Concentrated Load

< Table of Contents for Vol. 58 (2017) No. 2 June n. 192
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 58 (2017) No. 2 June n. 192
  • Pages: 145-158
  • Title: Theoretical, Numerical and Experimental Analysis of Polygonal Buckling Shapes of Spherical Shells Subjected to Concentrated Load
  • Author(s): D. Vető and I. Sajtos
  • DOI Name: https://doi.org/10.20898/j.iass.2017.192.813
  • Keywords: shell, spherical shell, buckling, polygonal buckling, geometric method, isometric deformations, inextensional deformations, quasi-inextensional deformations, compressed planar elastic ring
Abstract
This paper analyses the buckling shapes of spherical shells subjected to concentrated load. A theoretical investigation, based upon geometric considerations, shows a variety of possible buckling shapes, including polygonal ones. The results show that there exists a certain difference between the geometric behavior of shells characterized by different radius-thickness ratios. An analogy between the buckling edge of the shell and a compressed planar elastic ring is also shown, which gives a better view on the point of transformation of the buckling edge from a circle to a polygon. The results of numerical and experimental analyses are also exhibited to verify the theoretical achievements.

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