.. _auto_curve_olc_occupant_vad:

*COMPUTE THE OLC AND PLOT THE TIME-HISTORIES OF OCCUPANT*
=========================================================

Computes the Occupant Load Criterion (OLC) from a vehicle velocity–time curve and plots the resulting occupant velocity/acceleration–displacement time-histories. Use this worker to evaluate restraint system loading characteristics between free-flight and restraint phases of a crash pulse.

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

Classification: **process**.

Tagged: ``crash_pulse``, ``free_flight``, ``occupant_load_criterion``, ``olc``, ``restraint``, ``time_history``, ``vad``, ``vehicle_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 vs. time curve (units typically m/s or km/h vs. seconds) used as the source crash pulse for OLC computation; must be provided as a 2-column vector (time, velocity).
   * - Min Disp
     - min_disp
     - scalar
     - 65
     - 
     - End-of-free-flight occupant displacement threshold (mm, default 65) that marks the lower bound of the OLC integration window; increase if the free-flight phase is longer than typical.
   * - Max Disp
     - max_disp
     - scalar
     - 300
     - 
     - End-of-restraint occupant displacement threshold (mm, default 300) that marks the upper bound of the OLC integration window; adjust to match the expected maximum occupant travel for the vehicle class.
   * - Scale Factor
     - scale_factor
     - number
     - 1
     - 
     - Multiplicative scale factor applied to the derived acceleration values (dimensionless, default 1.0); set to –1 to invert sign convention or to any other value to convert units before OLC computation.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_olc_occupant_vad_output_1
     - curve_olc_occupant_vad_output_1
     - vector
     - Computed OLC result curve representing the occupant velocity/acceleration–displacement time-history over the restraint window, suitable for downstream KPI extraction or overlay plots.

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

- cae.postprocessing.response
- 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_occupant_vad <https://www.d3view.com/api/workflow/example?id=curve_olc_occupant_vad>`_

.. raw:: html

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   Auto-generated from <code>transformation</code> schema. Worker id: <code>curve_olc_occupant_vad</code>. Schema hash: <code>1a9ae3801c89</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>