Analysis of vibration characteristics and buckling behaviour of rotating fiber–graphene-reinforced composite pre-twisted shells
Why this work is in the frame
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Bibliographic record
Abstract
This study presents a novel approach to analyze the vibration and buckling behaviour of pre-twisted fiber-reinforced polymer composite shells reinforced with graphene inclusions. A key novelty lies in incorporating graphene’s size-dependent mechanical properties are derived from nanoscopic empirical equations into the analysis. This allows for a more accurate prediction of the overall mechanical response of the composite, particularly at the nanoscale. The Halpin–Tsai model is employed to determine the equivalent elastic constants of the graphene-reinforced matrix, and a finite element formulation based on curved shear deformable shell theory is developed. The model’s accuracy is validated against existing experimental or numerical results. Also, this study provides a comprehensive parametric analysis, investigating the influence of key factors, such as graphene volume fraction, twist angle, aspect ratio, hub radius, and rotation speed on the vibration frequency and buckling load of the pre-twisted shells. These findings offer valuable insights for the design and optimization of lightweight and high-performance composite structures utilized in aerospace, automotive, and other engineering applications.
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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 | 0.001 |
| 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