Files
OneCAD-Simulation/tests/oracle/arc-shallow-arch/fixture.json
T
jyvikoandClaude Opus 5.5 9f6afe7a89 verification: snap-through of a shallow arch by arc length
arc-shallow-arch: a sinusoidal arch of 40 × 2 × 1 hex20 under a sinusoidal dead load scaled to
the one-mode closed form's upper limit load: the upper limit point at 0.992 (−0.8 %), the lower
at 0.219 (0.8 % of the peak load) and exactly one negative eigenvalue between them. ROADMAP and
parity updated, docs/oracle.md regenerated.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
2026-10-14 13:53:27 -04:00

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{
"note": "FieldCraft's accepted results for this case, written by `cargo xtask oracle --bless`. A result outside its band fails CI.",
"values": {
"negative": {
"band": 1e-9,
"value": 1.0
},
"peak": {
"band": 1e-9,
"value": 0.9918292211513776
},
"valley": {
"band": 0.000020000218947968203,
"value": 0.21894796820214898
}
}
}