The Local Buckling Response of Internally Corroded Steel Pipelines under Combined Loads
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A parametric study has been conducted using the finite element analysis (FEA) technique to investigate the local buckling response of pipelines with axial groove corrosion under combined loads. The developed model used in the analyses has been validated against experimental tests. A large number of parameters such as the diameter to thickness ratio (D/t), axial load ratio (σa/σy), internal pressure ratio (p/py), defect circumferential length ratio (lc/D), defect depth ratio (d/t) and material properties (stress-strain curves) have been evaluated. Utilizing results from the parametric study, non-dimensional equations for predicting the critical local moment (Mlc), critical compressive strain (εlc) and critical local curvature (Фlc) for pipes with internal axial groove corrosion as a ratio to that of plain pipes have been developed through a multi-variable non-linear regression. Good agreement has been achieved between the predicted buckling limits (Mlc/Mlp, εlc/εlp and Фlc/Фlp ratios) using the developed equations and the finite element analyses.
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Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2015
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alenezi-thelocalbucklingresponseofinternallycorroded.pdf | 2023-05-04 | Public | Download |