A Theoretical Approach to Predict the Fatigue Life of Flexible Pipes
Joint Authors
Sagrilo, Luís V. S.
de Sousa, José Renato M.
de Sousa, Fernando J. M.
de Siqueira, Marcos Q.
de Lemos, Carlos Alberto D.
Source
Journal of Applied Mathematics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-29, 29 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-13
Country of Publication
Egypt
No. of Pages
29
Main Subjects
Abstract EN
This paper focuses on a theoretical approach to access the fatigue life of flexible pipes.
This methodology employs functions that convert forces and moments obtained in time-domain global analyses into stresses in their tensile armors.
The stresses are then processed by well-known cycle counting methods, and S-N curves are used to evaluate the fatigue damage at several points in the pipe’s cross-section.
Finally, Palmgren-Miner linear damage hypothesis is assumed in order to calculate the accumulated fatigue damage.
A study on the fatigue life of a flexible pipe employing this methodology is presented.
The main points addressed in the study are the influence of friction between layers, the effect of the annulus conditions, the importance of evaluating the fatigue life in various points of the pipe’s cross-section, and the effect of mean stresses.
The results obtained suggest that the friction between layers and the annulus conditions strongly influences the fatigue life of flexible pipes.
Moreover, mean stress effects are also significant, and at least half of the wires in each analyzed section of the pipe must be considered in a typical fatigue analysis.
American Psychological Association (APA)
de Sousa, José Renato M.& de Sousa, Fernando J. M.& de Siqueira, Marcos Q.& Sagrilo, Luís V. S.& de Lemos, Carlos Alberto D.. 2012. A Theoretical Approach to Predict the Fatigue Life of Flexible Pipes. Journal of Applied Mathematics،Vol. 2012, no. 2012, pp.1-29.
https://search.emarefa.net/detail/BIM-1029069
Modern Language Association (MLA)
de Sousa, José Renato M.…[et al.]. A Theoretical Approach to Predict the Fatigue Life of Flexible Pipes. Journal of Applied Mathematics No. 2012 (2012), pp.1-29.
https://search.emarefa.net/detail/BIM-1029069
American Medical Association (AMA)
de Sousa, José Renato M.& de Sousa, Fernando J. M.& de Siqueira, Marcos Q.& Sagrilo, Luís V. S.& de Lemos, Carlos Alberto D.. A Theoretical Approach to Predict the Fatigue Life of Flexible Pipes. Journal of Applied Mathematics. 2012. Vol. 2012, no. 2012, pp.1-29.
https://search.emarefa.net/detail/BIM-1029069
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1029069