CREATE A MAT_SAMP_LIGHT¶

Generates an LS-DYNA MAT_187 (MAT_SAMP-1 Light) keyword block from user-supplied material parameters. Use this worker to author a strain-rate-sensitive, semi-analytical material card for metals or polymers within a deck-authoring workflow.

When to use¶

Classification: data.

Tagged: MAT_SAMP_LIGHT, deck_authoring, keyword, ls-dyna, mat_187, mat_samp, material_card, strain_rate.

Inputs¶

Label	ID	Type	Default	Description
Material Name	material_name	scalar	MAT_187	Alphanumeric label written into the *MAT_187 keyword header (e.g. ‘MAT_187’); default ‘MAT_187’ is suitable for most cases.
Material ID	material_i_d	scalar	1	Integer LS-DYNA material ID (MID) referenced by *PART cards; default is 1 — change when multiple materials coexist in the same deck.
Curve Id	curve_id	scalar	1	Integer ID of the *DEFINE_CURVE (LCID) holding the uniaxial stress–strain data; default is 1 — must match the curve ID already defined in the deck.
Table Id	table_id	scalar	—	Integer ID of the *DEFINE_TABLE used for strain-rate-dependent stress–strain curves (TID); leave null when no rate dependence via table is required.
Strain Rates	strain_rates	scalar	—	Comma-separated list of strain-rate values (s⁻¹) corresponding to each curve in the rate-dependent table; leave blank when a single quasi-static curve is sufficient.
Density	density	scalar	7.89e-06	Mass density of the material (RO) in consistent LS-DYNA units — default 7.89e-06 kg/mm³ suits steel; override for other materials.
Elastic Modulus	elastic_modulus	scalar	210	Young’s modulus (E) in GPa (or the consistent unit of the deck) — default 210 GPa suits steel; override for aluminium, polymers, etc.
Elastic Poissons Ratio	elastic_poissons_ratio	scalar	0.3	Elastic Poisson’s ratio (PR, dimensionless) controlling transverse strain coupling — default 0.3 is appropriate for most metals; adjust for rubbers or composites.
LCEMOD	lcemo_d	vector	—	LCDMOD 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>
Beta	beta	scalar	0
Tensile Hardening Curve	tensile_hardening_curve	vector	—	Tensile 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>
Compression Hardening Curve	compression_hardening_curve	vector	—	Compression 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>
CTFLG	ctfl_g	scalar	1
RATEOP	rateo_p	scalar	2
NUEP	nue_p	scalar	—
Plastic Poissons Ratio	lcid_p	vector	—	LCID-P <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>
RFILTF	rfilt_f	scalar	—
Use Log Scale for Tension Table	t_log	scalar	no	When DEFINE_TABLE is used, this option allows to define the strain-rates in log scale
Use Log scale for Compression Table	c_log	scalar	no	When DEFINE_TABLE is used, this option allows to define the strain-rates in log scale
LCID INT for Tension and Compression	lcint_tc	scalar	201
LCINT for LCEMOD	lcemod_lcint	scalar	201
LCINT for LCID_P	lcpr_lcint	scalar	201
Table Curve Association	table_curve	scalar	no	Type of output for strain-rate curves

Outputs¶

Label	ID	Type	Description
dynakeyword_mat187_light_1	dynakeyword_mat187_light_1	text	Plain-text LS-DYNA keyword block containing the fully populated *MAT_SAMP-1 (MAT_187) card, ready to be concatenated into a simulation deck.

Disciplines¶

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

Auto-generated from transformation schema. Worker id: dynakeyword_mat187_light. Schema hash: 59024f4f5568. Hand-curated docs in workerexamples/ override this page when present.