Optimization of bandgaps for phononic crystal plate with protrusions based on adaptive genetic algorithm
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Bibliographic record
Abstract
In this paper, phononic crystal plates with spherical, square, and cylindrical protrusions are designed. The band structures of phononic crystal plates with one-side and double-side protrusions are calculated using the finite element method. Under the same set of all parameters, the relative bandgap widths with square and cylindrical protrusions are larger, and the volume with spherical protrusions is smaller. Next, the influences of geometric and material parameters on the relative bandgap width are discussed to determine the decision variable and optimization interval. Finally, an adaptive genetic algorithm is applied to optimize the design of bandgap characteristics and lightweight design. The frequency response curves of the optimized structure are also calculated to verify the accuracy and efficiency of the optimization model. The results show that the relative bandgap width of the phononic crystal plate is enlarged greatly with a slightly increased volume of protrusion for the optimized structure. The study can provide a new idea for applying lightweight phononic crystal plates in vibration damping.
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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 | 0.000 |
| 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 it