Computational Mechanics

, Volume 18, Issue 6, pp 444–453 | Cite as

Stability of pressurized long inelastic cylinders under radial transverse loads

  • S. A. Karamanos
Originals

Abstract

In the present paper, the structural capacity of relatively thick inelastic steel cylindrical tubes under external or internal pressure and concentrated radial loads is investigated, through a rigorous finite element analysis, as well as using a simplified analytical model. For zero pressure, the tubes exhibit inelastic cross-sectional deformation and are capable of dissipating a significant amount of plastic energy. The energy absorption capacity, as well as the ultimate transverse load, are reduced in the presence of external pressure. The effects of internal pressure are also examined. Results are reported in the form of load-deflection curves for different pressure levels. In addition, collapse envelops showing the interaction of pressure versus radial transverse loads are presented. The conclusions of this study are important for the structural integrity of cylindrical steel tubulars for pipeline and other offshore applications.

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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • S. A. Karamanos
    • 1
  1. 1.Steel and Timber StructuresFaculty of Civil Engineering Delft University of Technology NL-2628 CNDelftThe Netherlands
  2. 2.Institute of Structural Analysis and Aseismic ResearchNational Technical UniversityAthensGreece

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