schema_version: 1
problem:
  name: Miehe SENT 37992
  reference: Miehe et al. (2010), PhaseFieldX Example 1711

acceptance:
  status: validated
  reference_result: PhaseFieldX 1711 / promoted HPC job 37992
  required_outputs:
    - mesh.geo
    - mesh.msh
    - run_metadata.json
    - history.csv
    - energy.csv
    - timing_per_step.csv
    - solver_telemetry.csv
    - load_displacement.png
    - staggered_convergence.png
    - damage_final.png
    - damage_evolution.gif
    - compare.png
    - compare_report.txt
  metrics:
    peak_reaction:
      target: 0.7012
      observed: 0.6936
      tolerance_percent: 5.0
      units: kN
    pre_peak_l2:
      observed_percent: 1.70
      tolerance_percent: 10.0
    dissipated_energy:
      observed_error_percent: 5.38
      tolerance_percent: 15.0
  notes: >
    Reproduces the promoted script-driven HPC reference run 37992. The original
    runner used a two-rate displacement schedule: 50 steps to 0.005 mm, then
    300 steps to 0.008 mm. This YAML encodes that schedule with cyclic_phases.

geometry:
  type: miehe_tension
  parameters:
    L: 1.0
    a: 0.5
    l0: 0.015
    h_crack: 0.001875
    h_coarse: 0.05

material:
  E: 210000.0
  nu: 0.3
  Gc: 2.7
  l0: 0.015
  rho: 7.8e-09
  eta_residual: 1.0e-07
  energy_split: isotropic
  pf_model: AT2
  plane_stress: false

boundary_conditions:
  - {nodes: bottom, type: fix, component: 0}
  - {nodes: bottom, type: fix, component: 1}
  - {nodes: top, type: prescribe, component: 1, value: 1.0}

loading:
  protocol: cyclic
  cyclic_phases: "0.005:50,0.008:300"
  num_steps: 350
  dt: 1.0

solver:
  solver_type: quasi_static
  stagger_tol: 1.0e-08
  max_stagger: 500
  stagger_criterion: relative
  anderson_depth: 0
  adaptive_stagger_tol: false
  use_multigrid: true
  preconditioner: jacobi
  damage_tol: 1.0e-06
  static_tol: 1.0e-08
  bounds_method: post_clamp
  damage_max_iter: 5000
  static_max_iter: 5000
  H_cap_factor: 0.0
  backend: auto
  fail_on_mechanics_nonconvergence: false
  eta_residual: 1.0e-07

output:
  output_dir: null
  h5: true
  trajectory: true
  trajectory_format: zarr
  h5_every: 1
  plots: true
  profile: true
  gif: true
  gif_frames: 150
  gif_fields: damage
  animation_format: mp4
  print_every: 1
  reaction_node_set: bottom
  reaction_component: 1

device:
  device: cpu
  compile: false

initial_conditions:
  preseed_notch_nodesets: null
  preseed_damage: null