{
  "id": "https://uofa.net/nagaraja/cou1/factor/discretization-error",
  "type": "CredibilityFactor",
  "factorType": "Discretization error",
  "requiredLevel": 2,
  "achievedLevel": 2,
  "factorStatus": "assessed",
  "acceptanceCriteria": "Goal (b): grid convergence observed via three mesh refinement levels per lab; QoI variation <2% between fine and finest meshes. Formal Richardson extrapolation not performed. [Nagaraja §2.3, Table 1]",
  "rationale": "Each lab independently ran mesh-convergence sweeps. Construct stiffness and yield force converged to within 2% across the two finest mesh densities. Richardson extrapolation deferred per V&V 40 (b) gradation.",
  "factorStandard": "ASME-VV40-2018"
}