forked from 1b-agent/fieldcraft-upstream
Crates fieldcraft-*, binaries fieldcraft and fieldcraft-cli, the .fieldcraft file (format tag fieldcraft/1, manifest fieldcraft.json), FIELDCRAFT_* environment variables, the MCP server name, egui widget ids (fc_*), the app icon document FieldCraft.icon and its generated family, docs and licences. No compatibility shim: no files of the earlier name exist. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
Plate with a circular hole in tension (Kirsch)
A quarter of a square plate of half-width 30 with a hole of radius 1 (W = 60a, so the infinite plate's solution applies to a few tenths of a percent), thin (free faces, plane stress), with symmetry on x = 0, y = 0 and the mid-plane, pulled by a traction of 1 on x = 30. Two hex20 blocks around the hole (40 × 16 each), graded 40 : 1 towards it. Kirsch: σ_θ = 3S at the top of the hole, −S at its side.