.. _auto_curve_loading_unloading_difference:

*EFFECTIVE TO TRUE*
===================

Computes the difference between the loading and unloading branches of a load-displacement or stress-strain curve. Use this worker to quantify hysteresis, energy dissipation, or residual offsets between the two branches of a cyclic test curve.

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

Classification: **process**.

Tagged: ``curve``, ``cyclic``, ``difference``, ``hysteresis``, ``loading``, ``transformation``, ``unloading``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Loading unloading
     - loadingunloading
     - vector
     - —
     - 
     - A paired loading/unloading curve (e.g. force-displacement or stress-strain from a cyclic test); both branches must be present as a single vector input. Leave empty to skip processing.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - curve_loading_unloading_difference_output_1
     - curve_loading_unloading_difference_output_1
     - scalar
     - Scalar representing the computed difference (area or point-wise gap) between the loading and unloading branches of the input curve, capturing hysteresis magnitude.

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

- data.curve.pair
- data.curve.transform
- engineering.material.characterization

Runnable example
----------------

A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: `/api/workflow/example?id=curve_loading_unloading_difference <https://www.d3view.com/api/workflow/example?id=curve_loading_unloading_difference>`_

.. 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_loading_unloading_difference</code>. Schema hash: <code>8faf7a498c6a</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>