Large-diameter thick-walled steel pipes during their installation in deep-water are subjected to external pressure, which may trigger structural instability due to pipe ovalization, with detrimental effects. The resistance of offshore pipes against this instability is affected by local geometric deviations and residual stresses, introduced by the line pipe manufacturing process. In the present paper, the JCO-E pipe manufacturing process, a commonly adopted process for producing large-diameter pipes of significant thickness, is examined. The study examines the effect of JCO-E line pipe manufacturing process on the external pressure resistance of offshore pipes, candidates for deepwater applications using nonlinear finite element simulation tools. The cold bending induced by the JCO forming process as well as the subsequent welding and expansion (E) operations are simulated rigorously. Subsequently, the application of external pressure is modeled until structural instability (collapse) is detected. Both the JCO-E manufacturing process and the external pressure response of the pipe, are modeled using a two-dimensional (2D) generalized plane strain model, together with a coupled thermo-mechanical model for simulating the welding process.

References

References
1.
Kyriakides
,
S.
, and
Corona
,
E.
,
2007
,
Mechanics of Offshore Pipelines, Buckling and Collapse
, Vol.
1
,
Elsevier
, Oxford, UK.
2.
Kyriakides
,
S.
,
Corona
,
E.
, and
Fischer
,
F. J.
,
1991
, “
On the Effect of the UOE Manufacturing Process on the Collapse Pressure of Long Tubes
,”
ASME J. Eng. Ind.
,
116
(
1
), pp.
93
100
.
3.
Gresnigt
,
A. M.
,
Van Foeken
,
R. J.
, and
Chen
,
S.
,
2000
, “
Collapse of UOE Manufactured Steel Pipes
,”
Tenth International Offshore and Polar Engineering Conference
, Seattle, WA, May 28–June 2, Paper No. ISOPE-I-00-138.
4.
DeGeer
,
D.
, and
Cheng
,
J. J.
,
2000
, “
Predicting Pipeline Collapse Resistance
,”
International Pipeline Conference
, Calgary, AB, Canada, Paper No.
IPC2000-235
.
5.
Herynk
,
M. D.
,
Kyriakides
,
S.
,
Onoufriou
,
A.
, and
Yun
,
H. D.
,
2007
, “
Effects of the UOE/UOC Pipe Manufacturing Processes on Pipe Collapse Pressure
,”
Int. J. Mech. Sci.
,
49
(
5
), pp.
533
553
.
6.
Chatzopoulou
,
G.
,
Karamanos
,
S. A.
, and
Varelis
,
G. E.
,
2016
, “
Finite Element Analysis of UOE Manufacturing Process and Its Effect on Mechanical Behavior of Offshore Pipes
,”
Int. J. Solids Struct.
,
83
, pp.
13
27
.
7.
Toscano
,
R. G.
,
Raffo
,
J.
,
Mantovano
,
L.
,
Fritz
,
M.
, and
Silva
,
R. C.
,
2007
, “
On the Influence of the UOE Process on Collapse and Collapse Propagation Pressure of Steel Deep-Water Pipelines Under External Pressure
,”
Offshore Technology Conference
, Houston, TX, Apr. 30–May 3, Paper No. OTC-18978-MS.
8.
Chandel
,
J. D.
, and
Singh
,
N. L.
,
2011
, “
Formation of X-120 M Line Pipe Through J-C-O-E Technique
,”
Eng.
,
3
(
4
), pp.
400
410
.
9.
Gao
,
Y.
,
Li
,
Q.
, and
Xiao
,
L.
,
2009
, “
Numerical Simulation of JCO/JCOE Pipe Forming
,”
World Congress on Computer Science and Information Engineering
, Los Angeles, CA, pp. 233–237.
10.
Krishnan
,
V. R.
, and
Baker
,
D. A.
,
2014
, “
Enhanced Collapse Resistance of Compressed Steel Pipes
,”
33rd International Conference on Ocean, Offshore and Arctic Engineering
, San Francisco, CA, Paper No.
OMAE2014-24045
.
11.
Reichel
,
T.
,
Pavlyk
,
V.
,
Beissel
,
J.
,
Kyriakides
,
S.
, and
Jang
,
W. Y.
,
2011
, “
New Impander Technology for Improved Collapse Resistance of Large Diameter Pipe for Deepwater Applications
,”
Offshore Technology Conference
, Houston, TX, May 2–5, Paper No.
OTC-21503-MS
.
12.
Yan
,
C.
,
Liu
,
C.
, and
Zhang
,
G.
,
2014
, “
Simulation of Hydrogen Diffusion in Welded Joint of X80 Pipeline Steel
,”
J. Central South Univ.
,
21
(
12
), pp.
4432
4437
.
13.
Horn
,
T.
,
2003
, “
Cyclic Plastic Deformation and Welding Simulation
,”
Ph.D. thesis
, Delft University of Technology Press, Delft, The Netherlands.
14.
Yaghi
,
A. H.
,
Tanner
,
D. W. J.
,
Hyde
,
T. H.
,
Becker
,
A. A.
, and
Sun
,
W.
,
2012
, “
Finite Element Thermal Analysis of the Fusion Welding of a P92 Steel Pipe
,”
Mech. Sci.
,
3
(
1
), pp.
33
42
.
You do not currently have access to this content.