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Comparative Physical and Numerical Modeling of Riser-Seabed Interaction

[+] Author Affiliations
John Barrett, Ryan Phillips, Andrew Macneill

C-CORE, St. John’s, NL, Canada

Paper No. OMAE2015-42087, pp. V05BT04A059; 8 pages
doi:10.1115/OMAE2015-42087
From:
  • ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 5B: Pipeline and Riser Technology
  • St. John’s, Newfoundland, Canada, May 31–June 5, 2015
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5652-9
  • Copyright © 2015 by ASME

abstract

Offshore steel catenary riser-seabed interaction is complex with uncertainty in design for riser fatigue and longevity of the riser system. A numerical finite element tool was developed to capture the non-linear, hysteretic behaviour of riser-seabed interaction capturing trench formation with successive riser motions. The design and centrifuge testing of a three axis (translational degrees of freedom) actuator are also presented. This paper presents finite element analysis comparisons to physical test data as well as the influence the trench formation has on altering riser bending moment in the touchdown zone.

Copyright © 2015 by ASME

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