forked from 1b-agent/fieldcraft-upstream
jyvikoandClaude Opus 5.5
6d9452ad84
The oracle binary (modelcraft-testkit) runs each case's recipe through the command engine, measures its quantities by JSON pointers into step outputs or commands, compares them with the cited references and the frozen fixtures, and writes docs/oracle.md. 20 theory cases (patch tests of every solid element, Timoshenko cantilevers, Lame, Kirsch, beam frequencies, torsion and bending through couplings, explicit waves and impact, CDT invariants), 8 published benchmarks (MacNeal-Harder patch, straight and curved cantilevers, thick cylinder, Scordelis-Lo with solids, NAFEMS LE1, LE10, FV32) and 10 pending cases with citations. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm
546 B
546 B
MacNeal–Harder thick-walled cylinder, nearly incompressible (hex8 with incompatible modes)
Our model of the published problem: inner radius 3, outer 9, thickness 1, E = 1000, plane strain, unit internal pressure, ν = 0.49, 0.499 and 0.4999 (three separate bodies in one model, solved together). The radial element boundaries are those of Fig. 10 (3.0, 3.5, 4.2, 5.2, 6.75, 9.0); we model a quarter with symmetry planes (nine 10° elements around) instead of one 10° slice, which needs no skew support and is the same axisymmetric problem.