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

• Autores: Dániel Vető, István Sajtos
• Localización: Journal of the International Association for Shell and Spatial Structures, ISSN-e 1996-9015, ISSN 1028-365X, Vol. 58, Nº. 2, 2017, págs. 145-158
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • 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.