Nonlinear Transient Response of Risers Operating in Deep Water Seas

Nelson F. F. Ebecken, Edison C. P. Lima, Marcio M. Mourelle


In this work the nonlinear transient response of deepsea
riser is focused.For aecurate and economic time-domain
analysis of deepsea risers, a realistic representation of
hydrodynamic forces along the riser and an efficient
numerical method are required.
The riser is modelled by three dimensional beam finite
elements, which account for coupled axial, bending and
torsional deformations.
Some results are presented and the environmental model, hydrodynamic model and structural model are emphasized equally for accurate response prediction.

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