Cyclic Shearing Response of Granular Material in the Semi-Fluidized Regime
Bibliographic record
Abstract
Liquefaction is a phenomenon usually observed in saturated granular soils when subjected to monotonic or cyclic shearing under constrained volumetric conditions. Liquefaction is usually associated with a loss of mean effective stress due to generation of excess pore pressure during the shearing of soil. In this process the particles reduce, or in the extreme case may lose, contact with each other. This nearly contact-free state is known as “semi-fluidized regime”. In this state, the soil behaves almost like a viscous fluid, but the properties and origins of this response are not well understood. This study presents a series of numerical simulations using discrete element method (DEM) to model the constant volume cyclic shearing of three granular assemblies with different packing fractions. The variations of the stress-strain response and the corresponding coordination number for each sample are tracked when the semi-fluidized regime is achieved. The results show the semi-fluidized regime in all of these assemblies regardless their packing fraction. This micro-mechanics based approach to the analysis can elaborate on the variations of the coordination number, mean effective stress, and developed shear strains before and after entering such regime.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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".