.. _auto_dynakeyword_mat36:

*CREATE A MAT_36*
=================

Generates an LS-DYNA MAT_36 (*MAT_3-PARAMETER_BARLAT) keyword block for anisotropic plasticity of sheet metals. Accepts standard elastic/plastic parameters and a hardening-rule selector, then emits a ready-to-include keyword text. Use this worker whenever a Barlat three-parameter yield-surface material card is needed in a deck-authoring workflow.

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

Classification: **data**.

Tagged: ``MAT_3-PARAMETER_BARLAT``, ``anisotropic_plasticity``, ``barlat``, ``deck_authoring``, ``hardening_rule``, ``keyword``, ``lsdyna``, ``mat_36``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Material Name
     - material_name
     - scalar
     - —
     - 
     - Alphanumeric label written into the LS-DYNA keyword header (e.g. 'Steel_DP980'); leave blank to omit a named header.
   * - Material ID
     - material_i_d
     - scalar
     - —
     - 
     - Integer LS-DYNA material ID (MID) to assign to this card; must be unique within the deck.
   * - Density
     - density
     - scalar
     - —
     - 
     - Mass density of the material in consistent model units (e.g. kg/mm³ or t/mm³); required for any dynamic simulation.
   * - Elastic Modulus
     - elastic_modulus
     - scalar
     - —
     - 
     - Young's modulus (E) in consistent pressure units (e.g. MPa or GPa); defines the elastic stiffness of the material.
   * - Poissons Ratio
     - poissons_ratio
     - scalar
     - —
     - 
     - Poisson's ratio (ν, dimensionless, typically 0.28–0.33 for metals); governs lateral strain coupling.
   * - Hardening Rule
     - h_r
     - scalar
     - 1
     - 
     - Hardening rule selector (HR, integer 0–10) controlling the plastic hardening formulation used by MAT_36; defaults to 1 (Swift power-law).
   * - Starting Curve Id
     - starting_curve_id
     - scalar
     - 1
     - 
     - Starting load-curve ID offset; the worker assigns load-curve references for the Barlat yield surface beginning at this integer value, ensuring no ID collisions with other curves in the deck.
   * - Number Of Dig Points
     - numberof_dig_points
     - scalar
     - 200
     - 
     - Number of Dig Points
   * - R00 Hardening Curve
     - r00hardening_curve
     - vector
     - —
     - 
     - R00 Hardening Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R45 Hardening Curve
     - r45hardening_curve
     - vector
     - —
     - 
     - R45 Hardening Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R90 Hardening Curve
     - r90hardening_curve
     - vector
     - —
     - 
     - R90 Hardening Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - Shear Hardening Curve
     - shear_hardening_curve
     - vector
     - —
     - 
     - Shear Hardening Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - Bi-Axial Hardening Curve
     - bi-axial_hardening_curve
     - vector
     - —
     - 
     - Bi-Axial Hardening Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R00 Curve
     - r00curve
     - vector
     - —
     - 
     - R00 Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R45 Curve
     - r45curve
     - vector
     - —
     - 
     - R45 Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R90 Curve
     - r90curve
     - vector
     - —
     - 
     - R90 Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R Shear Curve
     - r_shear_curve
     - vector
     - —
     - 
     - R Shear Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - R Bi-Axial Curve
     - r_bi-axial_curve
     - vector
     - —
     - 
     - R Bi-Axial Curve   <a class='btn btn-xs btn-default' target='_blank' href='https://www.d3view.com/docs/master/workflows/Glossary.html#curveinput'> <i class='fa fa-external-link'> </i> View more </a>
   * - M Barlet Flow Exponent
     - m_barlet_flowexponent
     - scalar
     - 0
     - 
     - M Barlet Flow exponent
   * - AOPT
     - aop_t
     - scalar
     - 2
     - 
     - 
   * - XP
     - x_p
     - scalar
     - 0
     - 
     - 
   * - YP
     - y_p
     - scalar
     - 0
     - 
     - 
   * - ZP
     - z_p
     - scalar
     - 0
     - 
     - 
   * - A1
     - a1
     - scalar
     - 1
     - 
     - 
   * - A2
     - a2
     - scalar
     - 0
     - 
     - 
   * - A3
     - a3
     - scalar
     - 0
     - 
     - 
   * - V1
     - v1
     - scalar
     - 0
     - 
     - 
   * - V2
     - v2
     - scalar
     - 0
     - 
     - 
   * - V3
     - v3
     - scalar
     - 0
     - 
     - 
   * - D1
     - d1
     - scalar
     - 0
     - 
     - 
   * - D2
     - d2
     - scalar
     - 0
     - 
     - 
   * - D3
     - d3
     - scalar
     - 0
     - 
     - 
   * - BETA
     - bet_a
     - scalar
     - 0
     - 
     - 

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - dynakeyword_mat36_output_1
     - dynakeyword_mat36_output_1
     - text
     - Plain-text LS-DYNA keyword block containing the fully formatted *MAT_3-PARAMETER_BARLAT card, ready to be concatenated into a solver input deck.

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

- cae.preprocessing.deck_authoring
- engineering.material.calibration
- engineering.material.library

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>dynakeyword_mat36</code>. Schema hash: <code>061e3bfac6e8</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>