A stress-strain model for polycrystalline ice with application to ice-structure interactions
Bibliographic record
Abstract
A visco plastic constitutive model for polycrystalline ice is developed using the results of set of laboratory cyclic tests. The equations of the model were developed on the basis of a modified version of the classical theory of plasticity. The effect time and temperature on the mechanical plastic behaviour of ice were included.The model does not have a yield surface or a yield criterion; it uses a non-associative plastic potential function to formulate the plastic-stress strain behaviour of the ice. The model describes the behaviour of ice subjected to any loading path, including cyclic loading conditions. The model formulation accounts for the material non-linearity, time and temperature dependency, plasticity, material anisotropy, and hysterisis behaviour of ice when subjected to cyclic loading.An evaluation of the model was conducted to verify the capability of the model to predict the observed behaviour of ice. The model predictions of cyclic test results were in good agreement with the experimental measurements. The cyclic hysterisis stress-strain loops, and accumulated permanent strains were predicted very well.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".