Cristin-resultat-ID: 1507687
Sist endret: 23. mars 2018, 15:34
NVI-rapporteringsår: 2017
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2017

OMAE2017-62584 Experimental Investigation of Power Umbilical Damping

Bidragsytere:
  • Torfinn Ottesen

Bok

ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 5A: Pipelines, Risers, and Subsea Systems
ISBN:
  • 978-0-7918-5769-4

Utgiver

The American Society of Mechanical Engineers (ASME)
NVI-nivå 1

Serie

International Conference on Offshore Mechanics and Arctic Engineering (OMAE) [proceedings]
ISSN 1523-651X
NVI-nivå 1

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2017
Volum: 2017
Hefte: 5A
Antall sider: 10
ISBN:
  • 978-0-7918-5769-4

Klassifisering

Fagfelt (NPI)

Fagfelt: Konstruksjonsfag
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

OMAE2017-62584 Experimental Investigation of Power Umbilical Damping

Sammendrag

Ocean currents may cause vortex induced vibrations (VIV) of deep-water umbilicals and cables. Since the VIV response may give significant contributions to the total fatigue damage it is important to know the structural damping for relevant curvature levels. A laboratory test has been performed on a 12.5 m long test specimen to determine the damping for a range of curvature levels that are in the vicinity of the stick-slip transition region. The energy input to maintain steady state oscillations with curvature amplitudes in the range 0.0002–0.001 m−1 was measured. The steady state energy input is consistent with damping ratios obtained using the free decay method. The structural damping depends on construction temperature and curvature and is less for typically low seawater temperature and low curvatures. The transition between the stick- and the slip regime is seen for typical seawater temperature.

Bidragsytere

Torfinn Ottesen

  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean
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ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 5A: Pipelines, Risers, and Subsea Systems .

NN, NN. 2017, The American Society of Mechanical Engineers (ASME). Vitenskapelig antologi/Konferanseserie
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