Finite Element Simulation on Squeeze-off of Polyethylene Pipes
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Bibliographic record
Abstract
Squeeze-off is a widely used industrial procedure to block or reduce fluid flow in polyethylene (PE) pipes. In this study, squeeze-off of PE pipe is simulated using finite element modelling. A set of experimental testing data was used to tune and extract an elastic-plastic and creep material properties of a model which consists of a pipe specimen and a squeezing bar. Squeezing speeds of 0.01, 1, and 50mm/min that cover common speeds used during the pipe repair or maintenance were used to model the squeeze-off process. A material sensitivity analysis was performed to identify parameters in the constitutive equations for which change of values yields sensitive response of the deformation behaviour of PE. This study shows that identifying these parameters improves agreement between experimental data and finite element simulation. The finite element model was then used to determine stress and strain distribution in the pipe specimen during the squeezed off process.
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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 | 0.001 |
| 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 it