The present paper addresses aspects related to local buckling and instability of tensile armors in flexible pipes. Analytical models for evaluating the tensile armor buckling capacity in both transverse (radial and lateral) directions are presented based on formulating the linearized differential equation describing transverse stability of the thin curved wire assuming no friction. Then analytical models for the ultimate capacity of the outer sheath and antibuckling tape are formulated and a combined criterion for radial instability is proposed based on considering radial buckling of the tensile armor, wire yield failure, and the ultimate capacity of the outer sheath and tape. Thereafter, a study is performed comparing the proposed models with test data and alternative models available in the literature.
Skip Nav Destination
Sign In or Register for Account
Article navigation
August 2017
Research-Article
An Analytical Treatment of Buckling and Instability of Tensile Armors in Flexible Pipes
Svein Sævik
,
Svein Sævik
Professor
Department of Marine Technology,
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: svein.savik@ntnu.no
Department of Marine Technology,
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: svein.savik@ntnu.no
Search for other works by this author on:
Mats J. Thorsen
Mats J. Thorsen
Department of Marine Technology,
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: mats.j.thorsen@ntnu.no
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: mats.j.thorsen@ntnu.no
Search for other works by this author on:
Svein Sævik
Professor
Department of Marine Technology,
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: svein.savik@ntnu.no
Department of Marine Technology,
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: svein.savik@ntnu.no
Mats J. Thorsen
Department of Marine Technology,
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: mats.j.thorsen@ntnu.no
Norwegian University of
Science and Technology,
Trondheim 7491, Norway
e-mail: mats.j.thorsen@ntnu.no
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received November 4, 2014; final manuscript received February 20, 2017; published online May 5, 2017. Assoc. Editor: Myung Hyun Kim.
1Corresponding author.
J. Offshore Mech. Arct. Eng. Aug 2017, 139(4): 041701 (6 pages)
Published Online: May 5, 2017
Article history
Received:
November 4, 2014
Revised:
February 20, 2017
Citation
Sævik, S., and Thorsen, M. J. (May 5, 2017). "An Analytical Treatment of Buckling and Instability of Tensile Armors in Flexible Pipes." ASME. J. Offshore Mech. Arct. Eng. August 2017; 139(4): 041701. https://doi.org/10.1115/1.4036205
Download citation file:
Sign In
Get Email Alerts
Cited By
Numerical Investigation on Motion Responses of a Floating Hemisphere Over a Sloping Bottom
J. Offshore Mech. Arct. Eng (October 2021)
Marine climate projections towards the end of the 21st century in the North Atlantic
J. Offshore Mech. Arct. Eng
Lumped, Constrained Cable Modeling With Explicit State-Space Formulation Using An Elastic Version of Baumgarte Stabilization
J. Offshore Mech. Arct. Eng (December 2021)
Related Articles
Genset scheduling in a redundant electric power system for an offshore vessel using mixed integer linear programming
J. Offshore Mech. Arct. Eng (January,0001)
Utilizing the Ensemble Kalman Filter and Ensemble Kalman Smoother for Combined State and Parameter Estimation of a Three-Dimensional Towed Underwater Cable Model
J. Offshore Mech. Arct. Eng (December,2017)
Radial Buckling of Tensile Armor Wires in Subsea Flexible Pipe—Numerical Assessment of Key Factors
J. Offshore Mech. Arct. Eng (June,2016)
End Fitting Effect on Stress Evaluation of Tensile Armor Tendons in Unbonded Flexible Pipes Under Axial Tension
J. Offshore Mech. Arct. Eng (October,2018)
Related Proceedings Papers
Related Chapters
LARGE STANDOFF MAGNETOMETRY TECHNOLOGY ADVANCES TO ASSESS PIPELINE INTEGRITY UNDER GEOHAZARD CONDITIONS AND APPROACHES TO UTILISATION OF IT
Pipeline Integrity Management Under Geohazard Conditions (PIMG)
Buckling of Cylindrical Shells
Design of Plate and Shell Structures
Buckling of Cylindrical Shells
Stress in ASME Pressure Vessels, Boilers, and Nuclear Components