0

Full Content is available to subscribers

Subscribe/Learn More  >

Time Dependent Carcass-Liner Interface Load Model

[+] Author Affiliations
Geir Skeie, Nils Sødahl

DNV GL, Høvik, Norway

Roger Wold

Bane NOR, Høvik, Norway

Paper No. OMAE2017-62439, pp. V05AT04A037; 8 pages
doi:10.1115/OMAE2017-62439
From:
  • ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 5A: Pipelines, Risers, and Subsea Systems
  • Trondheim, Norway, June 25–30, 2017
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5769-4
  • Copyright © 2017 by ASME

abstract

Flexible risers in operation may experience large forces between the carcass and the polymer liner. Especially, cool-down of a pressurized riser results in thermal shrinkage of the liner layer and will transfer tensile loading of the carcass at the end fixation. Two aspects are then important to explore; the structural load capacity of the carcass structure and the balancing load effects acting on the carcass and liner. The current paper addresses the latter: the carcass load model. This has been presented in a previous publication in form of closed form expression for the long term quasi-static axial loading [1]. The model is extended to include the time dependent evolution of the carcass-liner interface force taking account of the time dependent material behavior in the liner and the time variation of the driving forces acting on the carcass and liner. The extension expresses the axial force as a convolution integral. In all but for the simplest cases the integral needs to be evaluated through appropriate quadrature rules. The closed form solution represents a reduced, efficient and robust scheme for evaluating the critical load level of a newly discovered failure mode. Further, the model enables identification of the critical parameters driving this failure mode.

Copyright © 2017 by ASME
Topics: Stress

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In