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Comparison Between Theoretical and Experimental Flexible Pipe Bending Stresses

[+] Author Affiliations
Svein Sævik

Norwegian University of Science & Technology, Trondheim, Norway

Paper No. OMAE2010-20352, pp. 395-402; 8 pages
  • ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering
  • 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 5, Parts A and B
  • Shanghai, China, June 6–11, 2010
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4913-2 | eISBN: 978-0-7918-3873-0
  • Copyright © 2010 by ASME


This paper presents alternative finite element formulations for predicting the dynamic stresses of tensile armour in un-bonded flexible pipes. Shear interaction in terms of friction stick-slip between layers is treated in two alternative ways; either by considering the cross-section resultant in terms of the friction moment or by applying a sandwich beam formulation for each individual tendon. For both formulations, the boundary condition in terms of initial contact pressure from static loads are treated by a separate model. Experimental studies applying fibre-optic Braggs are presented to validate the performance of the formulations in terms of dynamic stresses.

Copyright © 2010 by ASME
Topics: Stress , Pipe bending



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