Abstract
Based on the elastic-plastic, large-deformation finite element method, burst capacity of steel pipeline with longitudinal corrosion defect subjected to internal pressure is studied. The appropriate stress-based criterion is used to predict the failure pressure of finite element model of corroded pipeline under internal pressure. By considering the pipe steel grades and geometries of corrosion defects, a series of finite element analyses is conducted. The effects of corrosion depth, length and width on burst capacity are also discussed. A specific failure pressure solution for the assessment of corrosion defects in moderate-to-high strength pipeline is proposed on the base of numerical results. The failure pressures predicted by the proposed method are in better agreement with the experimental results than the results by the other methods.
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This project is financially supported by Ministry of Science and Technology of China (Grant No. 2011CB013702), and the Program for New Century Excellent Talents in University (Grant No. NCET-11-0051).
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Su, Cl., Li, X. & Zhou, J. Failure pressure analysis of corroded moderate-to-high strength pipelines. China Ocean Eng 30, 69–82 (2016). https://doi.org/10.1007/s13344-016-0004-z
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DOI: https://doi.org/10.1007/s13344-016-0004-z