forked from 1b-agent/fieldcraft-upstream
jyvikoandClaude Opus 5.5
2b1c52d021
An oracle case of uniaxial tension across a tie of non-matching meshes; the tie formulation in docs/fem.md and the literature survey; ROADMAP M7 and parity updated. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
Tie patch test (non-matching meshes)
Two unit cubes stacked along z, meshed independently: 3 × 3 × 2 hex8 below (graded in x and y), 2 × 2 × 2 above, so the nodes at z = 1 do not match. A tie bonds the upper block's bottom (secondary) to the lower block's top (main). The faces x = 0 and y = 0 are symmetry planes, the base z = 0 is held in z, and the top z = 2 is pulled up by 0.02 (E = 1000, ν = 0.3) in a linear static step. The exact state is the uniaxial stress σ_zz = 10, uniform in both blocks.