It is standard practice to approximate the post-yield behavior of pipeline steels by means of the Ramberg-Osgood equation. However, the Ramberg-Osgood equation is often unable to accurately describe the stress-strain behavior of contemporary pipeline steels with a high Y/T ratio. This is due to the occurrence of two distinct, independent stages of strain hardening. To address this problem, the authors recently developed a new ‘UGent’ stress-strain model which provides a better description of those steels. This paper elaborates a methodology to estimate suited parameter values for the UGent model, starting from a set of tensile characteristics. Using the proposed methodology, good approximations have been obtained for a preliminary series of eight investigated stress-strain curves. Next to all common tensile characteristics, the 1% proof stress is needed. The authors therefore encourage the future acquisition of this stress level during tensile tests. Currently, the authors perform a further in-depth validation which will be reported in the near future.
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2010 8th International Pipeline Conference
September 27–October 1, 2010
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute and the Pipeline Division
ISBN:
978-0-7918-4423-6
PROCEEDINGS PAPER
Determination of Full Range Stress-Strain Behavior of Pipeline Steels Using Tensile Characteristics Available to Purchase
Stijn Hertele´,
Stijn Hertele´
Ghent University, Gent, Belgium
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Wim De Waele,
Wim De Waele
Ghent University, Gent, Belgium
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Rudi Denys
Rudi Denys
Ghent University, Gent, Belgium
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Stijn Hertele´
Ghent University, Gent, Belgium
Wim De Waele
Ghent University, Gent, Belgium
Rudi Denys
Ghent University, Gent, Belgium
Paper No:
IPC2010-31291, pp. 119-128; 10 pages
Published Online:
April 4, 2011
Citation
Hertele´, S, De Waele, W, & Denys, R. "Determination of Full Range Stress-Strain Behavior of Pipeline Steels Using Tensile Characteristics." Proceedings of the 2010 8th International Pipeline Conference. 2010 8th International Pipeline Conference, Volume 4. Calgary, Alberta, Canada. September 27–October 1, 2010. pp. 119-128. ASME. https://doi.org/10.1115/IPC2010-31291
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