Numerical study of surface roughening in blow-formed aluminum bottle with crystal plasticity
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Bibliographic record
Abstract
Surface roughening due to the plastic straining in the blow-formed bottle is an important issue because of the cosmetically related surface appearance on the final product. In this paper, a finite-element-based crystal plasticity model is used to simulate surface roughening in aluminum tubes under blow-forming. The measured electron backscatter diffraction (EBSD) data is directly incorporated into the finite element model and the constitutive response at an integration point is described by the single crystal plasticity theory . Besides the influence of the texture and its spatial distribution, rate sensitivity and work hardening on surface roughening, the study shows that the better surface finishing in the final product can be achieved either through cladding a layer with more randomized texture or through improving the initial surface roughness of the tube before expansion, while the latter is more feasible and practical from industrial application point of view.
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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 | 0.001 | 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