Full Content is available to subscribers

Subscribe/Learn More  >

Fatigue Characterization of Long Dynamic Risers in Deep Waters

[+] Author Affiliations
Mohammad Iranpour, Farid Taheri

Dalhousie University, Halifax, Nova Scotia, Canada

J. Kim Vandiver

Massachusetts Institute of Technology, Cambridge, MA

Paper No. OMAE2007-29428, pp. 147-159; 13 pages
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 4: Materials Technology; Ocean Engineering
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4270-3 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME


Continuous current action on risers develops vortices. These vortices cause risers to respond in a dynamic manner, leading to relatively large oscillations in the flexural and circumferential stresses. Vortex-induced vibration (VIV) and the resulting changes in the level of stresses in a riser could therefore cause detrimental fatigue induced problems, ranging from leakage to catastrophic failure of the riser. As a result, the VIV induced fatigue has always been a critical parameter in the design of risers, particularly when considering risers in deep waters. An experimental investigation into the fatigue crack propagation was conducted using a series of field data obtained on the high mode vibration of a relatively long flexible model riser. The field test data clearly illustrated the variable amplitude nature of the loading imposed on the riser by the current profile. There are currently several methods available for consideration of the crack growth rate due to overload and/or underloads; however, none has been developed based on data obtained for an actual riser. Indeed, fatigue experimental data on risers subject to VIV are relatively scarce in the literature. In this study the influence of the different harmonics resulting from VIV on the overall fatigue damage of the material is investigated. It is shown that the available basic approaches for assessing the fatigue crack propagation of components under variable amplitude loadings may significantly underestimate the VIV-induced fatigue damage of risers.

Copyright © 2007 by ASME



Interactive Graphics


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

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