Evaluating plastic loads in torispherical heads using a new criterion of collapse

D. Camilleri, D. Mackenzie, R. Hamilton

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Abstract

In ASME Design by Analysis, the plastic load of pressure vessels is established using the Twice Elastic Slope criterion of plastic collapse. This is based on a characteristic load-deformation plot obtained by inelastic analysis. This study investigates an alternative plastic criteria based on plastic work dissipation where the ratio of plastic to total work is monitored. Two sample analyses of medium thickness torispherical pressure vessels are presented. Elastic-perfectly plastic and strain hardening material models are considered in both small and large deformation analyses. The calculated plastic loads are assessed in comparison with experimental results from the literature.
Original languageEnglish
Article number011202
Number of pages8
JournalJournal of Pressure Vessel Technology
Volume130
Issue number1
Early online date7 Jan 2008
DOIs
Publication statusPublished - 1 Feb 2008
EventProceedings of the ASME International Conference on Pressure Vessels and Piping - Vancouver, Canada
Duration: 23 Jul 200627 Jul 2006

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Keywords

  • pressure vessels
  • plastic load

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