COMPUTE THE HEAD INJURY CRITERIA (HIC) FOR A GIVEN ACCELERATION CURVE¶
Computes the Head Injury Criterion (HIC) for a given head acceleration time-history curve, supporting both d3VIEW and LS-PrePost calculation back-ends. Use this worker whenever an occupant-safety HIC or HICd scalar (or annotated curve) is needed from a resultant head acceleration signal.
When to use¶
Classification: process.
Tagged: acceleration, crash, d3view, head_injury_criterion, hic, hicd, injury_criteria, lsprepost.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Acceleration Curves | acc_curve | vector | — | Input head resultant acceleration time-history curve (vector of time–acceleration pairs); must be in consistent units before applying scale factors. | |
| Software | software | string | d3view | Calculation back-end to use: ‘d3view’ (default, internal engine) or ‘lsprepost’ (delegates to LS-PrePost HIC routine). | |
| Interval | interval | integer | 36 | Maximum time-integration window in milliseconds for the HIC integral; choose 15 ms (HIC15) or 36 ms (HIC36, default) per regulatory requirement; use -1 to search all windows. | |
| Time Sf | time_sf | float | 1 | ✓ | Multiplicative scale factor applied to the time axis before computation; set to 0.001 if the curve time is in microseconds, 1.0 (default) if already in milliseconds. |
| Acc Sf | acc_sf | float | 1 | ✓ | Multiplicative scale factor applied to the acceleration axis before computation; set to the appropriate factor to convert the signal to units of g (default 1.0 assumes signal is already in g). |
| Return Type | return_type | string | hic | Selects the output metric: ‘hic’ (default) returns the standard HIC value; ‘hicd’ returns the HICd (dummy-specific) variant. | |
| Points Type | point_type | string | all |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| curve_hic_output_1 | curve_hic_output_1 | vector | Output vector containing the computed HIC or HICd scalar result, typically formatted as a single-point or annotated curve carrying the peak injury-criterion value. |
Disciplines¶
- data.curve.transform
- engineering.crash.occupant_safety
Runnable example¶
A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: /api/workflow/example?id=curve_hic_curve
Auto-generated from transformation schema. Worker id: curve_hic_curve. Schema hash: 05b1b357395c. Hand-curated docs in workerexamples/ override this page when present.