jyvikoandClaude Opus 5.5
90729e4532
The bracket's tet mesh is not bit-identical across platforms (#115): its fillet peak is 213.31 MPa on macOS and 212.42 on Linux CI, which turned the oracle job red after #110. Those two quantities are no longer frozen; the page names them mesh-dependent instead of printing one platform's value. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
Filleted L-bracket: peak stress on the fillet (fine mesh)
The corpus part filleted-bracket (an 8 mm L-bracket with an R6 inside fillet and a hole through
each leg), built with SolidCraft from design.json. The foot face F2:side:l1 is clamped and a
2 kN load in +x acts on the top face F2:side:l5 (steel, E = 210 GPa, ν = 0.3). The leg bends
about its root, where the fillet concentrates the stress; beam theory gives about 197 MPa nominal
at the root (6FL/(bt²) with L = 42 mm, b = 40 mm, t = 8 mm).
mesh.tet.generate makes a quality tet10 mesh (size 5.66 mm, 31.8° per element along curved
faces), with the boundary and mid-edge nodes on the exact fillet cylinder. The peak nodal von
Mises stress on the fillet over a four-level study (sizes 16, 11.3, 8, 5.66 mm with 90°, 64°,
45°, 32°): 213.3, 210.6, 214.3, 213.3 MPa. The coarse and the fine level are the two cases.