.. _auto_curve_olc_number:

*COMPUTE THE OLC FROM A GIVEN VEHICLE VELOCITY CURVE*
=====================================================

Computes the Occupant Load Criterion (OLC) scalar value from a vehicle velocity time-history curve. The OLC is derived by integrating the velocity curve over a specified displacement window and applying an optional acceleration scale factor. Use this worker whenever a single OLC number is needed as a crash-pulse severity metric.

When to use
-----------

Classification: **process**.

Tagged: ``crash_pulse``, ``displacement_window``, ``occupant_load_criterion``, ``olc``, ``severity_metric``, ``velocity``.

Inputs
------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20 20 20

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Curve
     - vehicle_velocity
     - vector
     - —
     - 
     - Vehicle velocity time-history curve (time in ms, velocity in mm/ms or m/s) used as the source signal for OLC integration; must cover the full crash event.
   * - Min Disp
     - min_disp
     - scalar
     - 65
     - 
     - Lower bound of the displacement integration window in mm (default 65 mm); defines where OLC evaluation begins along the crush axis.
   * - Max Disp
     - max_disp
     - scalar
     - 300
     - 
     - Upper bound of the displacement integration window in mm (default 300 mm); defines where OLC evaluation ends along the crush axis.
   * - Scale Factor
     - scale_factor
     - number
     - 1
     - 
     - Multiplicative scale factor applied to the acceleration derived from the velocity curve (default 1.0); use values other than 1.0 only when unit conversion or signal correction is required.

Outputs
-------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20

   * - Label
     - ID
     - Type
     - Description
   * - curve_olc_number_output_1
     - curve_olc_number_output_1
     - scalar
     - Computed OLC scalar value (in g) representing the occupant load criterion over the specified displacement window.

Disciplines
-----------

- data.curve.transform
- engineering.crash.dynamics
- 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_olc_number <https://www.d3view.com/api/workflow/example?id=curve_olc_number>`_

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_olc_number</code>. Schema hash: <code>e944116482bd</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>