Multiaxial fatigue analysis on reeled steel tube umbilical is proposed based on finite element analysis (FEA) results. Due to the complexity of the umbilical geometry, the stresses and strains field becomes multiaxial, worsening the fatigue resistance. The reel-lay method is one of the most efficient and cost-effective methods of umbilical installation. However, if installed by the reel-lay method, material properties of the umbilical change may have an influence in fatigue performance of the line. Finite element analysis is applied with contact formulation, and the load history through the reel, aligner, and straightener is simulated. The strain history of the whole modeling process in the critical element is given, and the properties' change after the load history is discussed. Then, the principal stress criterion and the Brown–Miller criterion (both combined with the critical plane approach) based on FEA results are used to do fatigue life prediction of reeled and nonreeled models. The results indicated that a reel-lay method has a great influence on the fatigue life of steel tube umbilical, so the influence of installation on the steel tube umbilical fatigue must be considered when the reel-lay method is adopted.

References

References
1.
Yang
,
H. Z.
, and
Li
,
H. J.
,
2011
, “
Sensitivity Analysis of Fatigue Life Prediction for Deepwater Steel Lazy Wave Catenary Risers
,”
Sci. China Technol. Sci.
,
54
(
7
),
pp.
1881
1887
.10.1007/s11431-011-4424-y
2.
Yang
,
H. Z.
,
Li
,
H. J.
, and
Park
,
H. I.
,
2011
, “
Optimization Design for Steel Catenary Riser With Fatigue Constraints
,”
Int. J. Offshore Polar Eng.
,
21
(
4
),
pp.
302
307
.
3.
Yang
,
H. Z.
, and
Wang
,
A. J.
,
2012
, “
Fatigue Reliability Based Design Optimization of Bending Stiffener
,”
J. Ship Res.
,
56
(
2
),
pp.
120
128
. 10.5957/JOSR.56.2.110033
4.
Sum
,
W. S.
,
Williams
,
E. J.
, and
Leen
,
S. B.
,
2005
, “
Finite Element, Critical-Plane, Fatigue Life Prediction of Simple and Complex Contact Configurations
,”
Int. J. Fatigue
,
27
(
4
),
pp.
403
416
.10.1016/j.ijfatigue.2004.08.001
5.
Netto
,
T. A.
,
Botto
,
A.
, and
Lourenço
,
M. I.
,
2008
, “
Fatigue Performance of Pre-Strained Pipes With Girth Weld Defects: Local Deformation Mechanisms Under Bending
,”
Int. J. Fatigue
,
30
(
6
),
pp.
1080
1091
.10.1016/j.ijfatigue.2007.08.001
6.
Wästberg
,
S.
,
Nyhus
,
B.
, and
Pisarski
,
H.
,
2004
, “
Guidelines for Engineering Critical Assessments for Pipeline Installation Methods Introducing Cyclic Plastic Strain
,”
Proc. 23rd International Conference on Offshore Mechanics and Arctic Engineering
,
Vancouver, BC
,
pp.
19
26
,
ASME
Paper No. OMAE2004-51061. 10.1115/OMAE2004-51061
7.
Dobson
,
A.
,
2007
, “
Effect of Strain History on Steel Tube Umbilical
,”
Proc. 26th International Conference on Offshore Mechanics and Arctic Engineering
,
San Diego, CA
,
pp.
151
162
,
ASME
Paper No. OMAE2007-29181. 10.1115/OMAE2007-29181
8.
Buitrago
,
J.
,
Doynov
,
K.
, and
Fox
,
A.
,
2008
, “
Effect of Reeling on Small Umbilical Tubing Fatigue
,”
Proc. 27th International Conference on Offshore Mechanics and Arctic Engineering
,
Estoril, Portugal
,
pp.
355
364
,
ASME
Paper No. OMAE2008-57544. 10.1115/OMAE2008-57544
9.
Buitrago
,
J.
,
Rinehart
,
A. J.
,
Wang
,
H.
, and
Miller
,
J. E.
,
2010
, “
The Effect of Reeling on the Fatigue of Welded Risers
,”
Proc. 29th International Conference on Offshore Mechanics and Arctic Engineering
,
Shanghai, P. R. China
,
ASME
Paper No. OMAE2010-21131. 10.1115/OMAE2010-21131
10.
Sun
,
G. Q.
, and
Shang
,
D. G.
,
2010
, “
Prediction of Fatigue Lifetime Under Multiaxial Cyclic Loading Using Finite Element Analysis
,”
Mater. Design
,
31
(
1
),
pp.
126
133
.10.1016/j.matdes.2009.06.046
11.
Brown
,
M. W.
, and
Miller
,
K. J.
,
1973
, “
A Theory for Fatigue Failure Under Multiaxial Stress–Strain Conditions
,”
Proc. Inst. Mech. Eng.
,
187
(
65
),
pp.
745
755
. 10.1243/PIME_PROC_1973_187_161_02
12.
Darcis
,
P. P.
,
Marines-Garcia
,
I.
,
Ruiz
,
E. A.
,
Marques
,
E. C.
,
Armengol
,
M.
, and
Quintanilla
,
H. M.
,
2010
, “
Full Scale Fatigue Performance of Pre-Strained SCR Girth Welds—Comparison of Different Reeling Frames
,”
Proc. 29th International Conference on Offshore Mechanics and Arctic Engineering
,
Shanghai, P. R. China
,
ASME
Paper No. OMAE2010-21025. 10.1115/OMAE2010-21025
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