Free Vibration Analysis of Angle-Ply Laminated Circular Cylindrical Shells with Clamped Edges
Bibliographic record
Abstract
The free vibrations of angle-ply laminated cylindrical shells are studied numerically and experimentally.The material of the cylindrical shell is a carbon fiber reinforced plastic (CFRP).First, the material properties for the lamina of the cylindrical shell are measured.Secondly, using the measured material properties of the lamina, the natural frequencies and mode shapes of the angle-ply laminated cylindrical shells with clamped edges are computed by the finite element method (FEM).Finally, the vibration tests of the angle-ply laminated cylindrical shells with clamped edges are carried out.By applying the experimental modal analysis technique, natural frequencies and mode shapes of the shells are obtained.From the comparison between experimental and numerical results, one can see the good agreement between these results.Furthermore, the effects of length of the angle-ply laminated cylindrical shells with clamped edges on the natural frequencies and mode shapes are investigated numerically and experimentally.An approximate frequency equation for the shell's length is proposed.
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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".