Monitoring VIV fatigue damage on marine risers
Long flexible cylinders (e.g., risers, tendons and mooring lines) exposed to the marine environment encounter ocean currents leading to vortex-induced vibration (VIV). These oscillations, often driven at high frequencies over extended periods of time, may result in structural failure of the member d...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier Ltd.
2009
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| Online Access: | http://hdl.handle.net/1721.1/49843 https://orcid.org/0000-0002-7890-1699 https://orcid.org/0000-0002-6841-3894 https://orcid.org/0000-0002-2621-7633 https://orcid.org/0000-0002-4960-7060 |
| _version_ | 1826197373569728512 |
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| author | Mukundan, Harish Modarres-Sadeghi, Yahya Dahl, Jason Hover, Franz S. Triantafyllou, Michael S. |
| author2 | Massachusetts Institute of Technology. Center for Ocean Engineering |
| author_facet | Massachusetts Institute of Technology. Center for Ocean Engineering Mukundan, Harish Modarres-Sadeghi, Yahya Dahl, Jason Hover, Franz S. Triantafyllou, Michael S. |
| author_sort | Mukundan, Harish |
| collection | MIT |
| description | Long flexible cylinders (e.g., risers, tendons and mooring lines) exposed to the marine environment encounter ocean currents leading to vortex-induced vibration (VIV). These oscillations, often driven at high frequencies over extended periods of time, may result in structural failure of the member due to fatigue damage accumulation. Recent developments in instrumentation and installation of data acquisition systems on board marine risers have made accurate measurement of riser responses possible. This paper aims at using the data from these data acquisition devices (typically strain gages and accelerometers) in order to understand the evolution of the riser VIV, with the final aim of estimating the fatigue damage. For this purpose we employ systematic techniques to reconstruct riser VIV response using the data from the available sensors. The reconstructed riser response allows estimation of the dynamic axial stresses due to bending and consequently the estimates of the fatigue damage along the entire riser. The above methods can take into account the fatigue damage arising from complicated riser motions involving the presence of traveling waves even with the use of very few sensors. An alternate approach using a Van der Pol wake oscillator model is also explored to obtain fatigue life estimates caused by riser VIV. |
| first_indexed | 2024-09-23T10:46:42Z |
| format | Article |
| id | mit-1721.1/49843 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:46:42Z |
| publishDate | 2009 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | mit-1721.1/498432022-09-30T22:56:11Z Monitoring VIV fatigue damage on marine risers Mukundan, Harish Modarres-Sadeghi, Yahya Dahl, Jason Hover, Franz S. Triantafyllou, Michael S. Massachusetts Institute of Technology. Center for Ocean Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Hover, Franz S. Mukundan, Harish Modarres-Sadeghi, Yahya Dahl, Jason Hover, Franz S. Triantafyllou, Michael S. Long flexible cylinders (e.g., risers, tendons and mooring lines) exposed to the marine environment encounter ocean currents leading to vortex-induced vibration (VIV). These oscillations, often driven at high frequencies over extended periods of time, may result in structural failure of the member due to fatigue damage accumulation. Recent developments in instrumentation and installation of data acquisition systems on board marine risers have made accurate measurement of riser responses possible. This paper aims at using the data from these data acquisition devices (typically strain gages and accelerometers) in order to understand the evolution of the riser VIV, with the final aim of estimating the fatigue damage. For this purpose we employ systematic techniques to reconstruct riser VIV response using the data from the available sensors. The reconstructed riser response allows estimation of the dynamic axial stresses due to bending and consequently the estimates of the fatigue damage along the entire riser. The above methods can take into account the fatigue damage arising from complicated riser motions involving the presence of traveling waves even with the use of very few sensors. An alternate approach using a Van der Pol wake oscillator model is also explored to obtain fatigue life estimates caused by riser VIV. 2009-11-20T20:24:08Z 2009-11-20T20:24:08Z 2009-05 2008-04 Article http://purl.org/eprint/type/SubmittedJournalArticle 0889-9746 http://hdl.handle.net/1721.1/49843 Mukundan, H. et al. “Monitoring VIV fatigue damage on marine risers.” Journal of Fluids and Structures 25.4 (2009): 617-628. https://orcid.org/0000-0002-7890-1699 https://orcid.org/0000-0002-6841-3894 https://orcid.org/0000-0002-2621-7633 https://orcid.org/0000-0002-4960-7060 en_US http://dx.doi.org/10.1016/j.jfluidstructs.2009.03.003 Journal of Fluids and Structures Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Elsevier Ltd. Mukundan, Harish |
| spellingShingle | Mukundan, Harish Modarres-Sadeghi, Yahya Dahl, Jason Hover, Franz S. Triantafyllou, Michael S. Monitoring VIV fatigue damage on marine risers |
| title | Monitoring VIV fatigue damage on marine risers |
| title_full | Monitoring VIV fatigue damage on marine risers |
| title_fullStr | Monitoring VIV fatigue damage on marine risers |
| title_full_unstemmed | Monitoring VIV fatigue damage on marine risers |
| title_short | Monitoring VIV fatigue damage on marine risers |
| title_sort | monitoring viv fatigue damage on marine risers |
| url | http://hdl.handle.net/1721.1/49843 https://orcid.org/0000-0002-7890-1699 https://orcid.org/0000-0002-6841-3894 https://orcid.org/0000-0002-2621-7633 https://orcid.org/0000-0002-4960-7060 |
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