Effect of interfacial friction and fold penetration on the progressive collapse of foam-filled frustum using kinematically admissible model
Bibliographic record
Abstract
In this article, we extend our earlier analytical efforts of the progressive collapse of foam-filled conical frustum with the aid of a kinematically admissible folding mechanism. The instantaneous crushing force as well as the mean crushing force were derived from the principle of energy conservation accounting for the typically overlooked term of foam/shell interaction. Specifically, in this study, we accounted for the effect of two critical parameters upon the accuracy of our upper bound solution. The first is concerned with interfacial shell-foam friction. The second is with a more realistic proportion of the fold involved in the foam/shell interaction. The results of the analytical model are compared with nonlinear elastoplastic finite element collapse predictions as well as validation with our crush test results. The results reveal the effects of the interfacial friction and the modified fold proportion upon the accuracy of the analytical model and its ability in predicting the crushing force curve and the fold length.
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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 | 0.002 |
| 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 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 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".