NDLI: Efficient Analysis of a Catenary Riser

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Passano, Elizabeth Carl, M. Larsen
Copyright Year	2006
Abstract	The paper deals with the challenge of predicting the extreme response of catenary risers, a topic of both industry and academic interest. Large heave motions introduced at the upper end of a catenary riser can lead to compression and large bending moments in the region immediately above the touch down area. In the worst case, dynamic beam buckling may occur. The focus of the paper will be on understanding the riser behaviour in extreme, low-tension response and in establishing suitable analysis strategies to predict the extreme response. Results from long nonlinear stochastic simulations of many sea states with varying environmental and operating conditions may be combined to describe the long-term response of a nonlinear structure such as a catenary riser. However, this theoretically straight-forward approach is very demanding computationally and ways to limit the extent of nonlinear stochastic simulations are therefore sought. The usefulness of simpler methods such as regular wave analysis to improve understanding of the physical behaviour and to aid in concentrating the nonlinear simulations to where they are most useful, will be demonstrated.
Sponsorship	Ocean, Offshore, and Arctic Engineering Division
Starting Page	327
Ending Page	338
Page Count	12
File Format	PDF
ISBN	0791847462
DOI	10.1115/OMAE2006-92308
e-ISBN	0791837777
Volume Number	Volume 1: Offshore Technology; Offshore Wind Energy; Ocean Research Technology; LNG Specialty Symposium
Conference Proceedings	25th International Conference on Offshore Mechanics and Arctic Engineering
Language	English
Publisher Date	2006-06-04
Publisher Place	Hamburg, Germany
Access Restriction	Subscribed
Subject Keyword	Pipeline risers Compression Seas Simulation Tension Engineering simulation Risers (casting) Buckling Waves
Content Type	Text
Resource Type	Article

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