An analysis of parametric instability of risers
AUTOR(ES)
Prado, Fabio S., Sakamoto, Fernando Y., Mazzilli, Carlos E. N.
FONTE
Lat. Am. j. solids struct.
DATA DE PUBLICAÇÃO
2014-05
RESUMO
In this work, three catenary riser models subjected to harmonic oscillations are studied. Two are finite-element models, one studied with Orcaflex, an offshore marine system analysis software, and another one with Abaqus, a generalist structural analysis software. The third model is an analytical reduced-order model that represents only the touch-down zone. The aim of this study is to discuss the feasibility, potentialities and limitations of the analytical model in confrontation with the specialist and the generalist softwares for the analysis of risers, under conditions of parametric excitation and unilateral contact at the seabed.
