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- Title
Strain-Based Replacement Criterion for Third-Party Damaged Oil and Gas Pipelines.
- Authors
Yang, Jian-gong; Lian, Zhang-hua; Lin, Tie-jun; Yu, Hao; Sun, Tengfei
- Abstract
One reason for unpredictable failures in pipeline operation is third-party damage (TPD), which can occur due to actions of any third parties other than pipeline staff. Based on nonlinear dynamics theory, we propose a finite-element model for impact between an excavator bucket and the pipeline surface. The simulation was done for the following situations: gas transportation, bucket tooth striking the pipeline, bucket tooth separating from the pipeline, and unloading the pipeline pressure. We analyzed the pipeline damage mechanism and established the influence of the dent depth on residual strain and residual stress. Comparison of finite-element results with the standard criteria described in the standard ASME B31.8 showed that the latter criteria have a number of disadvantages.
- Subjects
PETROLEUM pipelines; PIPELINES; FINITE element method; RESIDUAL stresses; STRAINS &; stresses (Mechanics)
- Publication
Chemistry & Technology of Fuels & Oils, 2017, Vol 53, Issue 1, p140
- ISSN
0009-3092
- Publication type
Article
- DOI
10.1007/s10553-017-0789-3