Residual stress investigation of ceramic-shot-peened flange pin with finite element analysis
Bibliographic record
Abstract
The flange pin of landing gears, which is made of high strength low alloy, is peened with ZirShot-ZC600 ceramic shots. The residual stresses generated in the peened flange pin, which will affect the fatigue performance of the pin, are investigated with finite element analysis (FEA). Three-dimensional FEA model is created to simulate the target surface and shot peening flow which is generated randomly using the MATLAB program. It is revealed that the residual stresses of the peened surface layer in longitudinal, circumferential and radial direction all vary in depth from the target surface and they are all compressive with the maximum compressive stresses occurring at subsurface. The effects of target surface curvature and shot peening angle on the residual stress profiles in the peened surface are also studied. The FEA simulation results show that the maximum residual stresses in flat surface are greater than that in the surface with curvature and with increasing peening angle, the location of the maximum residual stresses moves down in depth from the peened surface.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".