.. _auto_curves_generate_gissmo_failure:

*GENERATE GISSMO FAILURE*
=========================

Generates a GISSMO failure curve (LCSDG) by combining an optional base failure curve with strain-rate dependency (LCSR) and mesh-regularization (LCREG) curves over a specified triaxiality range and strain rate. Use this worker to assemble the complete GISSMO fracture locus ready for LS-DYNA MAT_ADD_EROSION or equivalent keyword decks.

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

Classification: **process**.

Tagged: ``LCREG``, ``LCSDG``, ``LCSR``, ``failure_curve``, ``fracture_locus``, ``gissmo``, ``ls-dyna``, ``mat_add_erosion``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Gissmo Failure Curve
     - gissmo_failure_curve
     - vector
     - —
     - 
     - The GISSMO base failure curve (LCSDG): equivalent plastic strain at fracture vs. triaxiality ratio; accepts multiple curves (dimensionless x-axis, plastic-strain y-axis); leave empty to build the locus purely from options defaults.
   * - Options
     - values
     - keyvalue
     - *(complex)*
     - 
     - Key-value options controlling the generated locus: triax_min (default −0.666) and triax_max (default 0.666) define the triaxiality sweep range, strain_rate (default 1 × 10⁻⁴ s⁻¹) sets the reference strain rate, and mesh_length (default 1.0 mm) sets the reference element size for regularization.
   * - Strain rate dependency
     - strain_rate_curve
     - vector
     - 100
     - 
     - Strain-rate dependency curve or table (LCSR): scale factor vs. strain rate (s⁻¹); used to adjust the failure locus for dynamic loading; leave at default (100) to omit strain-rate scaling.
   * - Regularization curve
     - regularization_curve
     - vector
     - 100
     - 
     - Mesh-regularization curve or table (LCREG): scale factor vs. element size (mm); corrects the failure strain for mesh-size sensitivity; leave at default (100) to omit regularization scaling.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - GISSMO Failure Curve
     - failure_curve
     - vector
     - The assembled GISSMO failure curve (LCSDG-format vector): equivalent plastic failure strain vs. triaxiality, incorporating strain-rate and mesh-regularization adjustments, ready for direct use in an LS-DYNA GISSMO material deck.

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

- data.curve.transform
- engineering.material.calibration
- engineering.material.failure

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

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

.. 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_generate_gissmo_failure</code>. Schema hash: <code>56b3702ffa61</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>