NDLI: On the Structural Response of a Flexible Pipe With Damaged Tensile Armor Wires

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Sousa, Jose´ Renato M. De George, C. Campello Bueno, Antoˆnio Fernando B. Vardaro, Eduardo Gilberto, B. Ellwanger Telmo, R. Strohaecker
Copyright Year	2011
Abstract	This paper studies the structural response of a 6.0″ flexible pipe under pure tension considering two different situations: the pipe is intact or has five wires broken in its outer tensile armor. A three-dimensional nonlinear finite element model devoted to analyze the local mechanical response of flexible pipes is employed in this study. This model is capable of representing each wire of the tensile armors and, therefore, localized defects, including total rupture, may be adequately represented. Results from experimental tests are also presented in order to validate the theoretical estimations. The theoretical and experimental results indicate that the imposed damage reduced the axial stiffness of the pipe. High stress concentrations in the wires near the damaged ones were also observed and, furthermore, the stresses in the inner carcass and the pressure armor are affected by the imposed damage, but, on the other hand, the normal stresses in the wires of the inner tensile armor are not.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	847
Ending Page	858
Page Count	12
File Format	PDF
ISBN	9780791844366
DOI	10.1115/OMAE2011-50113
Volume Number	Volume 4: Pipeline and Riser Technology
Conference Proceedings	ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2011-06-19
Publisher Place	Rotterdam, The Netherlands
Access Restriction	Subscribed
Subject Keyword	Finite element model Armor Rupture Stiffness Tension Wire Damage Pipes Pressure Stress
Content Type	Text
Resource Type	Article

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