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Determination of full range stress-strain behavior of pipeline steels using tensile characteristics

Stijn Hertelé (UGent) , Wim De Waele (UGent) and Rudi Denys (UGent)
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Abstract
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.
Keywords
stress-strain behavior, contemporary pipeline steels

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Chicago
Hertelé, Stijn, Wim De Waele, and Rudi Denys. 2010. “Determination of Full Range Stress-strain Behavior of Pipeline Steels Using Tensile Characteristics.” In Proceedings of the 8th International Pipeline Conference, 4:119–128. American Society of Mechanical Engineers (ASME).
APA
Hertelé, S., De Waele, W., & Denys, R. (2010). Determination of full range stress-strain behavior of pipeline steels using tensile characteristics. Proceedings of the 8th International Pipeline Conference (Vol. 4, pp. 119–128). Presented at the 8th International Pipeline Conference (IPC 2010), American Society of Mechanical Engineers (ASME).
Vancouver
1.
Hertelé S, De Waele W, Denys R. Determination of full range stress-strain behavior of pipeline steels using tensile characteristics. Proceedings of the 8th International Pipeline Conference. American Society of Mechanical Engineers (ASME); 2010. p. 119–28.
MLA
Hertelé, Stijn, Wim De Waele, and Rudi Denys. “Determination of Full Range Stress-strain Behavior of Pipeline Steels Using Tensile Characteristics.” Proceedings of the 8th International Pipeline Conference. Vol. 4. American Society of Mechanical Engineers (ASME), 2010. 119–128. Print.
@inproceedings{1053297,
  abstract     = {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.},
  articleno    = {IPC2010-31291},
  author       = {Hertel{\'e}, Stijn and De Waele, Wim and Denys, Rudi},
  booktitle    = {Proceedings of the 8th International Pipeline Conference},
  isbn         = {9780791844236},
  keyword      = {stress-strain behavior,contemporary pipeline steels},
  language     = {eng},
  location     = {Calgary, AB, Canada},
  pages        = {IPC2010-31291:119--IPC2010-31291:128},
  publisher    = {American Society of Mechanical Engineers (ASME)},
  title        = {Determination of full range stress-strain behavior of pipeline steels using tensile characteristics},
  volume       = {4},
  year         = {2010},
}

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