COMPUTE 3MS CLIP¶
Computes the 3ms clip value for a given acceleration curve, a standard metric in crash safety analysis representing the maximum acceleration level sustained for at least 3 milliseconds. Accepts an optional time scale factor and a return-type selector to control whether the result is expressed as the clipping interval (t1/t2) or the peak value with its onset time (t1/Ymax).
When to use¶
Classification: process.
Tagged: 3ms_clip, FMVSS, HIC, NCAP, acceleration, crash, curve_transform, injury_criteria.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Curve | curve | vector | — | Input acceleration-vs-time curve (x = time in model units, y = acceleration in g’s) on which the 3ms clip calculation is performed; connect a vector curve output from an upstream extraction or transformation worker. | |
| time_sf | time_sf | scalar | 1.0 | Scalar scale factor applied to the time axis before computing the clip (e.g. 1e-3 to convert milliseconds to seconds); default is 1.0 (no scaling). | |
| return_type | return_type | list | t1t2 | Selects the form of the returned result: ‘t1t2’ returns the start and end times of the worst 3ms window, ‘t1Ymax’ returns the window start time and the peak clipped acceleration value; default is ‘t1t2’. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| curve_threems_clip_output_1 | curve_threems_clip_output_1 | scalar | Scalar result of the 3ms clip calculation: either the [t1, t2] interval boundaries (seconds) or the [t1, Ymax] pair (seconds, g’s), depending on the selected return_type. |
Disciplines¶
- data.curve.transform
- data.signal_processing
- 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_threems_clip
Auto-generated from transformation schema. Worker id: curve_threems_clip. Schema hash: f7e95f93eaef. Hand-curated docs in workerexamples/ override this page when present.