COMPUTE THE PULSE SEVERITY¶
Computes pulse severity metrics from an acceleration-time curve, including initial velocity, time-to-zero, efficiency, dynamic crush, rebound velocity, and rebound time. Use this worker to characterize crash pulse quality and energy absorption from a measured or simulated acceleration signal.
When to use¶
Classification: process.
Tagged: acceleration, crash_pulse, dynamic_crush, efficiency, initial_velocity, pulse_severity, rebound, ttz.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Curve To Be Looked Up | curvetobelookedup | vector | — | Acceleration-time curve to be analysed (X: time in ms or s, Y: acceleration in consistent units with gravity); leave empty only if the curve is supplied by an upstream worker. | |
| Gravity | gravity | scalar | 0.00981 | Gravitational constant used to convert acceleration units (default 0.00981 km/ms² ≈ 9.81 m/s²); adjust if the curve’s acceleration is in different physical units. | |
| Return Type | return_type | string | efficiency | Which pulse-severity metric to return: ‘initial_velocity’, ‘ttz’ (time-to-zero), ‘efficiency’, ‘rebound_time’, ‘dynamic_crush’, ‘rebound_velocity’, or ‘all’ for a full result set; defaults to ‘efficiency’. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| curve_pulse_severity_output_1 | curve_pulse_severity_output_1 | scalar | Scalar result for the selected return_type (e.g. efficiency as a dimensionless ratio, velocity in km/s, time in ms, or crush in mm); when return_type is ‘all’, a structured record containing all six metrics is returned. |
Disciplines¶
- data.curve.transform
- data.signal_processing
- engineering.crash.dynamics
Runnable example¶
A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: /api/workflow/example?id=curve_pulse_severity
Auto-generated from transformation schema. Worker id: curve_pulse_severity. Schema hash: 68a89291aff8. Hand-curated docs in workerexamples/ override this page when present.