This paper investigates the influence of yield-to-tensile strength ratio on failure pressure of pipelines without and with corrosion defects. Based on deformation instability and finite strain theory, a plastic collapse model for end-capped defect-free pipes is developed. The stress-strain response of materials is characterized by a power-law hardening curve, and the plastic deformation obeys the von Mises yield criterion and the deformation theory of plasticity. Two formulas to estimate the strain hardening exponent for a specific are obtained, and a closed-form solution to the limit pressure of pipes is derived as a function of . This plastic collapse model is then extended to predict the failure pressure of pipelines with corrosion defects. Numerical and experimental comparisons are presented that validate the present models which characterize the influence of on the failure behavior of pipeline.
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November 2005
Research Papers
Influence of Yield-to-Tensile Strength Ratio on Failure Assessment of Corroded Pipelines
Brian N. Leis
Brian N. Leis
614-458-4387
Battelle Memorial Institute
, 505 King Avenue, Columbus, Ohio 43201
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Brian N. Leis
614-458-4387
Battelle Memorial Institute
, 505 King Avenue, Columbus, Ohio 43201J. Pressure Vessel Technol. Nov 2005, 127(4): 436-442 (7 pages)
Published Online: June 1, 2005
Article history
Received:
August 27, 2003
Revised:
June 1, 2005
Citation
Zhu, X., and Leis, B. N. (June 1, 2005). "Influence of Yield-to-Tensile Strength Ratio on Failure Assessment of Corroded Pipelines." ASME. J. Pressure Vessel Technol. November 2005; 127(4): 436–442. https://doi.org/10.1115/1.2042481
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