MODELING OF PIPELINE STRESS-STRAIN STATE IN COMPLICATED ENVIRONMENT
https://doi.org/10.31675/1607-1859-2018-20-6-115-125
Abstract
Purpose: The aim of this work is to study the stress-strain state of the pipeline affected by rill erosion. Design/methodology/approach: The pipeline modeling and the stress-strain analysis are carried out using the ANSYS finite element program which provides rather high accuracy of numerical experiments, and, as a consequence, achievement of results with high degree of confidence. The initial data for a series of numerical experiments are derived from actual conditions of the pipeline operation and interpreted for using them in the ANSYS program. Research findings: The numerical experiment includes several stages, namely: the develop-ment of the finite element model (FEM) of the pipeline affected by rill erosion; meshing pro-cess of the pipeline model; load application to the pipeline; and setting the boundary condi-tions. A series of numerical experiments is carried out in varying the depth of rill erosion re-sulting in the equivalent stress distribution (von Mieses stresses) over the pipeline FEM. The maximum and minimum values of the pipeline strains and von Mieses stresses are obtained. This stress distribution allows detecting the critical depth value for the rill erosion in the pipeline under study. A study of the stress-strain state is an important and urgent task, the solution of which determines a safe operation of the field pipeline. The stress-strain state caused by the internal and external pressure or tensile stresses affects the pipeline reliability. Evaluation of the pipeline properties is one of the preventive measures against accidental damage. Practical implications: The stress-strain state investigations are very important for ensuring a safe operation of the pipeline of interest. This is because the stress-strain state caused by the internal loads and external compressive or tensile stresses affects the pipeline reliability. Value: The estimation of the pipeline material properties assists in prevention of emergency situations.
About the Authors
P. V. Burkov
National Research Tomsk Polytechnic University; Tomsk State University of Architecture and Building.
Russian Federation
Russian Federation
DSc, Professor, Oil and Gas Engineering Division of School of Earth Sciences & Engineering.
30, Lenin Ave., Tomsk; 2, Solyanaya Sq., Tomsk.
D. M. Voronkov
National Research Tomsk Polytechnic University.
Russian Federation
Russian Federation
Undergraduate.
30, Lenin Ave., Tomsk.
V. P. Burkov
National Research Tomsk Polytechnic University.
Russian Federation
Russian Federation
Assistant Lecturer.
30, Lenin Ave., Tomsk.
S. P. Burkova
National Research Tomsk Polytechnic University.
Russian Federation
Russian Federation
PhD, A/Professor.
30, Lenin Ave., Tomsk.
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Review
For citations:
Burkov P.V., Voronkov D.M., Burkov V.P., Burkova S.P. MODELING OF PIPELINE STRESS-STRAIN STATE IN COMPLICATED ENVIRONMENT. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2018;(6):115-125. (In Russ.) https://doi.org/10.31675/1607-1859-2018-20-6-115-125
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