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Numerical Modeling of Plastic Deformations in UOE Line Pipe

[+] Author Affiliations
Oliver Hilgert, Susanne Höhler, Steffen Zimmermann

Salzgitter Mannesmann Forschung GmbH, Duisburg, Germany

Christoph Kalwa

Europipe GmbH, Mülheim a. d. Ruhr, Germany

Paper No. IPC2010-31663, pp. 375-383; 9 pages
doi:10.1115/IPC2010-31663
From:
  • 2010 8th International Pipeline Conference
  • 2010 8th International Pipeline Conference, Volume 4
  • Calgary, Alberta, Canada, September 27–October 1, 2010
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4423-6 | eISBN: 978-0-7918-3885-3
  • Copyright © 2010 by ASME

abstract

In this contribution a model to investigate the structural response of pipelines in view of strain based design is developed. The approach is based on analytical modeling and verified with finite element solutions. The model is derived at first for isotropic structural behavior. Several load cases, namely pressure containment and combined loads are then evaluated with specific strain based requirements and their corresponding stress states. As a result the influence of Y/T ratio and hardening exponent on the structural behavior can be confirmed numerically. Finally, the model is extended to anisotropic structural behavior. With this extension pressure-strain diagrams from numerical and experimental hydro tests show an enhanced correlation to each other.

Copyright © 2010 by ASME

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