Mathematical Modelling and Dynamic Analysis of an Offshore Drilling Riser

Figure 4

Dynamic responses for an offshore drilling riser with 2000 m during the numerical simulation in 0∼300 s, (a) distribution of lateral deflection, (b) time history of deflection angle of the upper joint, and (c) that of the bottom joint. The vibration trajectories of the riser in every 200 m depth are displayed for (d) fast lateral deflection phase, (e) reciprocating deflection phase, and (f) dynamic stable condition phase, respectively.

(a)

(b)

(c)

(d)

(e)

(f)