Application of FEM and SEA in predicting vibro-acoustic behavior of a flat ribbed panel structure
Bibliographic record
Abstract
Two major design tools in predicting acoustical response of the coupled structure-cavity are presented. The response of a structure excited by a point force is predicted using Finite element method (FEM) and statistical energy analysis (SEA). Structural testing was required to confirm integrity of the FE model of the structure, and modal testing was performed on the ribbed panel. The ribbed panel structure was modeled with 9600 Quad8 shell elements, and the cavity inside the box was modeled with 31000 Hexa8 solid elements. The modal response of the structure, for FE model, is used for structural correlation, and fine FRF measurement was performed on the suspended ribbed panel. FE modeling is used to predict the response of the system for low-mid frequency range. Predicted average interior noise of the box-ribbed panel system when excited by a point force, where FE predictions correlate well with the measured sound pressure level for frequency range of 200-1000 Hz.
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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) | 0.000 | 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 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".