Molecular modeling of the mechanical behavior and interactions in dry and slightly hydrated sodium montmorillonite interlayer
Bibliographic record
Abstract
To accurately model and understand the mechanism of the evolution of microstructure during swelling, it is extremely important to model the mechanical response of smectite clay interlayers. The mechanical response of the interlayer of dry and hydrated montmorillonite is evaluated in this paper using steered molecular dynamics simulations. An atomic model of the sodium montmorillonite interlayer is first constructed. Dry montmorillonite and montmorillonite with one monolayer of interlayer water are studied. Using steered molecular dynamics, external forces can be applied to individual atoms to study the response of the model to applied forces. Displacement versus applied stress in the interlayer between clay layers for dry and hydrated conditions is evaluated by applying forces to the surface clay atoms. The paper describes the construction of the model, evaluation of the force field required for steered molecular dynamics simulations, the simulation procedure, and results of the simulations. The simulations not only provide the quantitative stress–deformation relationships but also give an insight into the molecular interactions taking place in dry and hydrated conditions.Key words: montmorillonite, swelling clays, cohesive soils, molecular dynamics, interlayer spacing.
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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 | 0.000 | 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 | 0.001 |
| 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".