Research Article

Efficient Fatigue Analysis of Helix Elements in Umbilicals and Flexible Risers: Theory and Applications

Table 3

Fatigue load case description.

Vessel heading (deg) Direction Probability of vessel heading per direction

0 Near 60%
15 Near 30%
30 Near 10%
0 Far 60%
15 Far 30%
30 Far 10%
0 Cross 60%
15 Cross 30%
30 Cross 10%