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
44 lines
1.0 KiB
JSON
44 lines
1.0 KiB
JSON
{
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"title": "Cantilever under a tip load, Timoshenko deflection (tet10)",
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"kind": "theory",
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"source": "Timoshenko and Gere, Mechanics of Materials (beam with shear deformation: δ = PL³/3EI + PL/κGA, κ = 5/6 for a rectangle); Cowper, J. Appl. Mech. 33 (1966) 335–340 for the shear coefficient",
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"quantities": [
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{
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"id": "tip_uz",
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"quantity": "tip deflection u_z at (10, 0.5, 0.5)",
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"measure": {
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"command": "solve.probe",
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"params": {
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"step": "Bend",
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"at": [
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[
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10.0,
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0.5,
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0.5
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]
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]
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},
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"pointer": "/nodes/0/displacement/2"
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},
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"value": -4.024,
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"tolerance": {
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"relative": 0.005
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},
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"reason": "beam theory vs 3D elasticity (a few tenths of a percent at L/h = 10); quadratic tetrahedra are converged on this mesh"
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},
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{
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"id": "reaction",
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"quantity": "total reaction z",
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"measure": {
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"from": "solve",
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"pointer": "/reaction_total/2"
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},
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"value": 1.0,
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"tolerance": {
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"relative": 1e-09
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},
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"reason": "equilibrium holds to rounding"
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}
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]
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}
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