{
  "selection_method": "Finite grid; all harmonic/static/decay corners then all selected-design transient corners. Not a global optimum.",
  "candidates": 30,
  "harmonic_feasible_candidates": 15,
  "uncertainty_corners": 32,
  "selected": {
    "stiffness_N_m": 120000,
    "damping_ratio": 0.1,
    "accepted": true,
    "rejected_by": "",
    "static_compression_mm": 7.440643124906281,
    "operating_reaction_envelope_N": 7.576939635290005,
    "operating_sensor_acceleration_m_s2": 1.4148429618479725,
    "decay_2percent_s": 1.4138024406393421,
    "total_compression_mm": 7.463490696000192,
    "group_load_min_N": 432.7692991490519,
    "group_load_max_N": 767.5360447029477
  },
  "nominal": {
    "transient_relative_motion_mm": 1.118120544990596,
    "total_compression_mm": 6.676545646205171,
    "group_load_min_N": 420.9806904190903,
    "group_load_max_N": 763.7490747782722,
    "runup_peak_sensor_acceleration_m_s2": 0.8516465828215882,
    "bump_peak_sensor_acceleration_m_s2": 1.8299215400150828,
    "final_relative_motion_mm": 1.1340645390255606e-06,
    "energy_residual_J": 5.8819349252337005e-09
  },
  "transient_envelope": {
    "static_compression_mm": 7.440643124906281,
    "operating_reaction_envelope_N": 7.576939635290005,
    "operating_sensor_acceleration_m_s2": 1.4148429618479725,
    "decay_2percent_s": 1.4138024406393421,
    "transient_relative_motion_mm": 1.2648326768970162,
    "total_compression_mm": 8.677405989552321,
    "group_load_min_N": 318.3659121738203,
    "group_load_max_N": 923.5962022701904
  },
  "nominal_modes_hz": [
    6.697144367297318,
    7.607746408664269
  ],
  "stiffness_N_m": [
    126000.0,
    114000.0
  ],
  "damping_N_s_m": [
    528.3355577078468,
    542.8131850334457
  ],
  "stiff_retrofit": {
    "operating_reaction_envelope_N": 46.25047485968885,
    "operating_sensor_acceleration_m_s2": 1.348844449150753,
    "static_compression_mm": 1.111685020242915,
    "decay_2percent_s": 0.6917083442759357,
    "group_load_min_N": 529.6064807942412,
    "group_load_max_N": 666.3798787308532,
    "total_compression_mm": 1.1683616592024235
  },
  "nominal_frequency_peak_refinement": {
    "refined_peak_N": 5.509090922882177,
    "frequency_hz": 35.0,
    "grid_peak_N": 5.509090922882177,
    "grid_to_refined_N": 0.0
  },
  "numeric_check_count": 12,
  "regression_test_count": 22
}