FEM calculation of frequencies variation caused by residual stress distribution in welded structures
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Bibliographic record
Abstract
All manufacturing and forming processes induce residual stress in mechanical parts and experiments have shown that residual stress distribution affects the natural frequencies in structures. In practice, measuring residual stress is still difficult, and cannot always be done without destroying the part. Even if some non-destructive methods exist for measuring the residual stress, they cannot be applicable on all parts and results are sometimes more qualitative than quantitative. Numerical methods such as the finite element method (FEM) provide tools for predicting the state of stress resulting from welding, and using modal analysis has appeared as an interesting alternative for measuring and predicting the residual stress. Simulations of welding on a plate have been done using the commercial software ANSYS. Results show that after the welding simulation, the natural frequencies have risen by about 5 to 7 percent in comparison with a free of stress plate.
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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