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

Mathematics

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