{ "schema": "copv_c04_detailed_pilot_v1", "created": "2026-10-26T01:59:46.211469+08:00", "target_distinct_geometries": 20, "geometry_seed": 20261026, "geometry_scope": "Detailed C01/C02/C03 assembly: retain 12 structural regions and six display-only seal/backup parts; not the old axisymmetric-only dataset proposal", "geometry_sampling": "one original baseline, fourteen one-parameter extrema, five LHS interaction samples; IDs frozen before fields", "ranges": { "inner_radius_mm": [ 90.0, 110.0 ], "straight_length_over_radius": [ 3.5, 4.5 ], "dome_depth_over_radius": [ 0.55, 0.7 ], "boss_bore_radius_over_radius": [ 0.12, 0.18 ], "neck_length_over_radius": [ 0.15, 0.25 ], "liner_thickness_over_radius": [ 0.008, 0.012 ], "overwrap_thickness_over_radius": [ 0.025, 0.035 ] }, "materials_source": "copv_c03_mesh_v1.json", "primary_solver": "true three-dimensional GPU-FEniCSx P2, exact P1 CUDA GAMG coarse transfer", "load": "1 MPa internal traction plus actual discrete port-polygon cap resultants; exact geometry-specific ports and six-DOF numerical gauge", "quality_gate": { "surface_min_SICN": 0.05, "volume_min_SICN": 0.05, "total_volume_relative_error_max": 0.001, "material_region_volume_relative_error_max": 0.001, "positive_Jacobians": true, "one_connected_component": true, "shared_Tri6_interfaces": true }, "upstream_hold": "C03 has 6541 low-SICN cells; no C03 research mesh is promoted to production", "repair_policy": "Retain original CAD and attempt local sizing; a separately versioned 0.002 mm CAD-healing candidate may be examined with material identity and volume-drift checks. 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