Hybrid Coupled and Uncoupled Methodologies for Floating Systems Motion Analysis

摘要

The objective of this paper is to present comparative and parametric studies employing uncoupled and hybrid methodologies for the motion analysis of floating platforms and their consequences for the fatigue damage of the risers. The studies are performed using a model of the P18 platform, located at Campos Basin, Brazil, that comprises the first Steel Catenary Riser (SCR) installed by Petrobras. The structural/fatigue analysis of this SCR was used for the comparison of both methodologies. Some typical results of motions are compared separately in wave and low frequency ranges.