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A Plastic Load Criterion for Inelastic Design by Analysis

[+] Author Affiliations
Donald Mackenzie, Hongjun Li

University of Strathclyde, Glasgow, UK

Paper No. PVP2005-71556, pp. 413-419; 7 pages
doi:10.1115/PVP2005-71556
From:
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 3: Design and Analysis
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4188-X | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME

abstract

The allowable plastic load in pressure vessel Design by Analysis is determined by applying a graphical construction to a characteristic load-deformation plot of the collapse behavior of the vessel. This paper presents an alternative approach to the problem. The plastic response is characterized by considering the curvature of a plot of plastic work dissipated in the vessel against the applied load. It is proposed that salient points of curvature correspond to critical stages in the evolution of the gross plastic deformation mechanism. Application of the proposed criterion is illustrated by considering the elastic-plastic response of a simple cantilever beam in bending and a complex 3-D Finite Element Analysis of a nozzle intersection.

Copyright © 2005 by ASME
Topics: Stress , Design

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