COMPUTE THE OCCUPANT INJURY STAR-RATING BASED ON THE HICD AND PEAK VALUE SOF CHEST, FEMUR AND NECK VALUES¶
Computes the occupant injury STAR rating from a set of peak injury criteria — HICd, chest deflection, femur load, and neck loads (NIJ, tension, compression) — for a specified dummy type and unit system. Use this worker to roll up individual biomechanical peak values into a single NCAP-style star-rating score for occupant safety assessment.
When to use¶
Classification: process.
Tagged: H3-5, H3-50, HICd, NCAP, chest_deflection, femur_load, injury_criteria, neck_NIJ.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| HICd | hi_cd | scalar | — | Head Injury Criterion (HICd) scalar value (dimensionless); computed from head acceleration time history — leave null if head injury is not part of the rating scenario. | |
| Peak Chest Deflection in mm | peak_chest_deflectioninmm | scalar | — | Peak chest deflection in millimetres (mm); maximum thoracic compression recorded during the crash event — leave null if chest injury is not evaluated. | |
| Peak Femur Load in kN | peak_femur_loadink_n | scalar | — | Peak femur compressive load in kilonewtons (kN); maximum axial force measured at the femur load cell — leave null if femur injury is not evaluated. | |
| Peak Neck NIJ in kN | peak_neck_ni_jink_n | scalar | — | Peak Neck Injury Index (NIJ) value in kN (normalised combined neck load/moment); leave null if neck NIJ is not part of the rating. | |
| Peak Neck Tension in kN | peak_neck_tensionink_n | scalar | — | Peak neck tensile force in kilonewtons (kN); maximum upper-neck tension recorded during the event — leave null if neck tension is not evaluated. | |
| Peak Neck Compression in kN | peak_neck_compressionink_n | scalar | — | Peak neck compressive force in kilonewtons (kN); maximum upper-neck compression recorded during the event — leave null if neck compression is not evaluated. | |
| Occupant Type | occupant_type | string | H3-5 | Dummy family selector — ‘H3-5’ for the 5th-percentile Hybrid III female and ‘H3-50’ for the 50th-percentile male; defaults to ‘H3-5’ and governs the injury-limit thresholds applied in the rating algorithm. | |
| Unit System | unit_system | string | mm-kN-ms | Unit system used for all input scalars; select ‘mm-kN-ms’ (millimetre / kilonewton / millisecond) or ‘mm-N-sec’ (millimetre / newton / second) to ensure correct dimensional scaling inside the rating function — defaults to ‘mm-kN-ms’. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| injury_star_rating_output_1 | injury_star_rating_output_1 | scalar | Computed occupant injury STAR rating (numeric scalar, typically 1–5); aggregated score derived from all supplied peak injury criteria against the thresholds for the selected dummy type and unit system. |
Disciplines¶
- engineering.crash.occupant_safety
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