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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Shell Structures

The effect of dents on the buckling and post-buckling behavior of cylindrical shells with stepwise variable thickness

< Table of Contents for Shell Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Shell Structures
  • Pages: 9
  • Title: The effect of dents on the buckling and post-buckling behavior of cylindrical shells with stepwise variable thickness
  • Author(s): Sara Pourkhorshidi, Karim Abedi
  • Keywords: cylindrical shell, variable thickness, buckling, post- buckling, indent
Abstract
Thin-walled cylindrical shells with stepwise variable thickness in height, are the most prevalent structural components in the petrochemical industry. During service life, these structures may be exposed to some geometrical imperfections, such as dents. Previous studies show that the stability behavior of cylindrical shells under pressure load is strongly dependent on the nature and magnitude of the imperfections. Some experimental studies have been carried out regarding the effect of dents on these structures. This study presents an investigation into the effects of dent on the buckling and post-buckling behavior of stepwise graded cylindrical shells. For this purpose, a graded cylindrical shell in actual dimensions has been designed in double and triple layers and modelled in ABAQUS, then some vertical and horizontal dents have been made in different places. The stability behavior of the imperfect cylindrical shells has been evaluated under the peripheral pressure loading.

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