Compressive properties of multi-hierarchical hybrid reentrant honeycombs
Bibliographic record
Abstract
In this study, the two- and three-hierarchical hybrid reentrant honeycombs were designed with reentrant hexagon as main unit, ellipse and missing-rib as support units. The effects of support units and concave Angle on compressive characteristics were explored. Through the experiment and simulation analysis, the compressive curves of the two-hierarchical honeycombs had a long plateau stage (close to 0.3 strain) in the early deformation to fully buffer. The ellipse and missing-rib made the deformation more stable, and their energy absorption was nearly twice and 1.8 times that of 2RH, respectively. The concave Angles θ and α of one- and two-hierarchies affected the later segmentation of the compressive curves. The three-hierarchical honeycombs showed that the upper layer deformed first and the lower layer deformed later. According to the Poisson’s rate-strain curves, the deformation of the lower layer of the three-hierarchical honeycombs was more severe than that of the upper layer when α = 70°, while the deformation was opposite when α = 60° and 50°. This study offered valuable insights into multi-hierarchical hybrid structures with auxetic behavior.
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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 | 0.000 |
| 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 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".