.. _auto_curves_effective_remove_localization:

*UPDATE TO REMOVE LOCALIZATION*
===============================

Detects the onset of localization in an effective stress–strain curve by comparing an input (test/baseline) curve against a simulation output curve using a configurable ratio threshold. From the detected localization point onward, the curve is extended via iso-parametric scaling in both X and Y directions. Use this worker to produce a physically consistent post-necking tail for MAT_24-style plasticity input.

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

Classification: **process**.

Tagged: ``MAT_24``, ``curve_update``, ``effective_stress``, ``iso-parametric_scaling``, ``localization``, ``post-necking``, ``stress_strain``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Input Effective Stress
     - input_effective_stress
     - vector
     - —
     - 
     - Reference effective stress–strain curve (typically from a physical test or baseline simulation) used as the target to detect the localization onset point; supply as a vector of (strain, stress) pairs in consistent units.
   * - Output Effective Stress
     - output_effective_stress
     - vector
     - —
     - 
     - Effective stress–strain curve from the current simulation that is compared against the input reference to identify where localization begins; supply as a vector of (strain, stress) pairs in the same units as the input curve.
   * - Ratio to detect Localization
     - ratio
     - scalar
     - 0.05
     - 
     - Dimensionless threshold ratio (default 0.05): localization is flagged at the first point where the absolute difference between the two curves exceeds this fraction of the input curve's y-value; increase to allow larger divergence before truncation.
   * - Scale Factor
     - sf
     - scalar
     - 2.0
     - 
     - Y-axis iso-parametric scale factor applied beyond the localization point (default 2.0); controls how steeply the stress is extrapolated after necking — leave at default for a typical steel post-necking tail.
   * - X-Scale Factor
     - xsf
     - scalar
     - 1.0
     - 
     - X-axis iso-parametric scale factor applied beyond the localization point (default 1.0, i.e. no X-scaling); increase above 1.0 to stretch the strain range of the extrapolated post-localization segment.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - updated_curve
     - updated_curve
     - vector
     - Effective stress–strain curve with the post-localization segment replaced by the iso-parametrically scaled extension; returned as a vector of (strain, stress) pairs ready for direct use as a plasticity input curve (e.g., MAT_24 LCSS).

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

- data.curve.transform
- engineering.material.calibration
- 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=curves_effective_remove_localization <https://www.d3view.com/api/workflow/example?id=curves_effective_remove_localization>`_

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>curves_effective_remove_localization</code>. Schema hash: <code>c000f69fcdeb</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>