Prediction — Three heights, three decisions
With b = 0.05 m, L = 1 m, E = 210 GPa, and F = −1000 N:
I = b·h³/12
uy_ref = F·L³/(3·E·I)
sigma_ref = F·(0.8L)·(h/2)/I ! interior section| Case | h (m) | mesh_h (m) | |uy_ref| (mm) | σ_ref (MPa) | Acceptable (analytical) |
|---|---|---|---|---|---|
| 1 | 0.08 | 0.04 | 0.744 | 15.0 | no (> 0.25 mm) |
| 2 | 0.10 | 0.05 | 0.381 | 9.6 | no |
| 3 | 0.12 | 0.06 | 0.220 | 6.9 | yes |
The analytical prediction already rejects the first two designs. The FE sweep must confirm this with validation_pass and mark only case 3 as feasible.