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
34 lines
1.0 KiB
JSON
34 lines
1.0 KiB
JSON
{
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"title": "Constrained Delaunay mesh of a cylinder: volume within the chordal bound, valid elements",
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"kind": "theory",
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"source": "mesh invariants: an inscribed polygon of sagitta s loses at most 2s/R of a circle's area (elementary geometry); constrained Delaunay tetrahedralization after Diazzi et al., ACM TOG 42(6) 2023",
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"quantities": [
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{
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"id": "volume",
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"quantity": "volume of the tetrahedra",
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"measure": {
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"from": "tet",
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"pointer": "/volume"
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},
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"value": 6267.477343911638,
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"tolerance": {
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"relative": 0.0025
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},
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"reason": "the tessellation inscribes the cylinder within the chordal tolerance s = 0.05: the polygon section loses between 0 and 2s/R = 0.5% of the area; the reference is the middle of that band"
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},
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{
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"id": "invalid",
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"quantity": "elements that fail the certified Jacobian check",
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"measure": {
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"command": "mesh.quality",
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"pointer": "/invalid/count"
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},
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"value": 0.0,
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"tolerance": {
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"exact": true
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},
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"reason": "every element of a valid mesh has positive volume"
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}
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]
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}
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