Quasi-static compressive behaviour of Bézier function-based body-centred cubic lattice sandwich structures
Bibliographic record
Abstract
Abstract To improve the energy absorption performance of single-layer body-centred cubic (BCC) lattice sandwich structures, this study proposes a design method for a Bézier function-defined body-centred cubic lattice core (BCCB). By conducting screening, the unit cell with excellent energy-absorbing performance is obtained. The mechanical response and energy-absorbing mechanism under quasi-static compression are analysed in conjunction with finite-element simulation, and the effect of rod diameter is also explored. It has been demonstrated that the single-layer BCCB lattice sandwich structure exhibits a layered deformation mechanism under compressive loading, enhancing the energy-absorbing capacity through the alternating formation of plastic hinges in the upper and lower parts of the unit cell, the bending deformation of rods, and the interaction between the core and panels. The increase in diameter enhances both the initial stiffness and energy absorption of the structure; however, its effect on specific energy absorption (SEA) remains limited due to the material’s ductility constraints. Additionally, for the single-layer BCCB lattice sandwich structure with SEA in this study, the deformation mode is minimally affected by changes in diameter.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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".