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
420 B
420 B
Thick-walled cylinder under internal pressure, plane strain (Lamé)
A quarter of a cylinder a = 10, b = 20, one unit long, with symmetry planes x = 0 and y = 0 and u_z = 0 on both ends (plane strain), and internal pressure p = 100 (E = 210000, ν = 0.3); 8 × 16 hex20 elements with mid-side nodes on the arcs. Lamé: u_r = (1 + ν)a²p/(E(b² − a²)) ((1 − 2ν)r + b²/r), σ_θ(a) = p(b² + a²)/(b² − a²).