Finite Element Simulation of Crack Propagation in Ice Floes
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Bibliographic record
Abstract
A method for modeling fracture in stiff plates of uniform thickness is presented. The Mindlin-Reissner plate theory within the framework of the finite element method is utilized. The fracture criterion is based on the Rankine theory, in which a crack is initiated when normal traction at a node exceeds a given tensile strength. The traction is calculated as a path integral around a crack tip or a tentative split. The propagation direction is such that the normal traction at the crack tip is maximized. A time-based criterion for crack initiation and propagation is added to the model, which yields better correspondence with the experimentally observed fracture patterns. The proposed methodology was implemented in an in-house code. Initial validation shows excellent agreement between the proposed methodology's predictions and the realistic fracture patterns of ice floes.
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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 | 0.000 |
| 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) | 0.001 | 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