Finite Element Analysis For Telescopic Deformation And Tearing Rupture of Wrinkled Pipe
Bibliographic record
Abstract
Buried pipeline may be subjected to various complex combinations of loads and deformations. This may result in localized curvature, strains and associated deformations in the pipe wall. As a result, wrinkle (local buckling in the pipe wall) may form. The wrinkled pipeline may then develop a fracture and even rupture in the pipe wall and lose its structural integrity if it is subjected to further sustained deformation and/or load. When an NPS10 field line pipe ruptured due to tearing in the pipe wall in the wrinkle region, it was felt that a wrinkle formed in the line pipe, and then or simultaneously the wrinkle region of the line pipe was subjected to transverse load, causing the tearing-type rupture at the foot of the wrinkle, although actual load-deformation history wan not known. Thus, a research program consisting of full-scale tests and parametric study using the finite element method was designed and undertaken to understand the load-deformation combination that may produce a deformed shape and a tearing rupture that looks similar to the one observed in the field NPS10 line pipe. This paper discusses results obtained from the tests and parametric study.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".