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Dynamic and Frictional Interaction Between Buoyancy Can Riser Tensioner System and SPAR Hull

[+] Author Affiliations
Yousun Li, Heedo Yun, Jane Q. Zhang, Shankar Bhat Aramanadka

Shell International E&P, Inc., Houston, TX

Heping Zhang

HPMG Technology, Inc.

Paper No. OMAE2005-67143, pp. 377-382; 6 pages
doi:10.1115/OMAE2005-67143
From:
  • ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
  • 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 1, Parts A and B
  • Halkidiki, Greece, June 12–17, 2005
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4195-2 | eISBN: 0-7918-3759-9
  • Copyright © 2005 by ASME

abstract

Buoyancy Can Riser Tensioner (BCRT) systems provide tension to the Top Tensioned Riser (TTR) systems. The main benefit of employing BCRT is that it can minimize the interaction between the floating platform and riser system. The possible lateral impact and dynamic loads which may occur between the SPAR hull and BCRT are minimized by placing the so-called Compliant Guides (CGs) at the sliding interfaces. The CGs are designed to allow relatively free sliding of the BCRT in the riser axial direction, while preventing/minimizing lateral impact loads by providing lateral compliance. CGs are made of high stiffness and abrasion resistant material, such as elastomer materials. Objective of this study is to develop a numerical capability and analysis procedure to evaluate the spar-riser interaction mechanism and their effects on spar motion and riser response. The newly developed frictional interface element is an essential component of an FE model for the time simulation of the coupled motions of SPAR and riser systems. The algorithm can be used to investigate the dynamic and frictional interaction between the SPAR and BCRTs, such as the friction’s impact on the SPAR motion and riser stresses, and the dynamic load/wear requirements on the CGs.

Copyright © 2005 by ASME

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