Finite Element method application for Assessing the performance of pipelines with Geometrical defects
https://doi.org/10.21822/2073-6185-2025-52-3-159-171
Abstract
Objective. The aim of this study is to develop and improve methods for assessing the performance of pipelines with ovality defects to enhance the safety and economic efficiency of their operation.
Methods. The modeling and refined calculation of pipelines were performed in a software package using the elastoplastic formulation of the problem with the use of the Ramberg-Osgood deformation diagram. The calculation is most approximate for deformed steels.
Results. Fatigue life calculations have shown that, under operating conditions, most ovalization defects of the cross-section up to 10% retain residual service life. A method has been developed for rejecting pipes with ovality, taking into account various characteristics, allowing for more reliable rejection and evaluation of pipes with this defect.
Conclusion. The proposed methods, derived from the study of the cross-sectional defect of ovality, are advisable for assessing the performance of defective pipeline sections, as well as during the technical condition-monitoring phase. The relevance is confirmed by the fact that the defect was studied taking into account many factors that affect the strength characteristics of steel.
About the Authors
R. A. Khuramshina
Ufa State Petroleum Technological University
Russian Federation
Russian Federation
Regina A. Khuramshina - Senior Lecturer, Department of Oil and Gas Transport and Storage.
1 Kosmonavtov Str., Ufa 450064
D. A. Gaizullin
Ufa State Petroleum Technological University
Russian Federation
Russian Federation
Dinar A. Gaizullin, Lecturer - Institute of Oil and Gas Engineering and Digital Technologies.
1 Kosmonavtov Str., Ufa 450064
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Review
For citations:
Khuramshina R.A., Gaizullin D.A. Finite Element method application for Assessing the performance of pipelines with Geometrical defects. Herald of Dagestan State Technical University. Technical Sciences. 2025;52(3):159-171. (In Russ.) https://doi.org/10.21822/2073-6185-2025-52-3-159-171
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