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
7 lines
423 B
Markdown
7 lines
423 B
Markdown
# MacNeal–Harder patch test for solids (hex8 with incompatible modes)
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Our model of the published problem: a unit cube cut into seven hexahedra around an irregular inner
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hexahedron (inner node coordinates from Fig. 3), E = 10⁶, ν = 0.25, with the linear displacement
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field of Table 2(c) prescribed at the eight corners. The published solution is the uniform strain
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10⁻³ with σ_x = σ_y = σ_z = 2000 and τ = 400.
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