This paper presents a combined time-frequency domain procedure for estimation of SCR fatigue damage caused by heave-induced intermittent Vortex-Induced Vibration (VIV). The procedure is implemented in a computer simulation which combines time domain motions with frequency domain calculations of VIV damage. It has been calibrated to fatigue damage data acquired from Phase 1 of the PMB Highly Compliant Rigid Riser JIP. Simulations have been performed for a number of host platforms in various environments. The fatigue calculation procedure, as well as the results for these simulations are presented. Results show that significant damage due to this effect can be expected for certain combinations of floating system type and environment.
Combined time-frequency domain procedure to estimate riser fatigue caused by heave-induced Vortex-Induced Vibration
2000
6 Seiten, 4 Quellen
Aufsatz (Konferenz)
Englisch
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