CREATE A MAT_024 WITHOUT STRAIN RATES KEYWORD FOR LS-DYNA¶
Generates an LS-DYNA MAT_024 (*MAT_PIECEWISE_LINEAR_PLASTICITY) keyword block without strain-rate dependency, using user-supplied material properties and a hardening curve. Use this worker when building or templating LS-DYNA input decks that require a rate-independent elasto-plastic steel (or similar) material card.
When to use¶
Classification: data.
Tagged: MAT_024, MAT_PIECEWISE_LINEAR_PLASTICITY, deck_authoring, keyword, ls-dyna, mat24, material_card, plasticity.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Material Name | material_name | scalar | — | Alphanumeric label written into the MAT_024 keyword header (e.g. ‘Steel_DP600’); leave blank to omit a named comment line. | |
| Material ID | material_i_d | scalar | — | Integer LS-DYNA material ID (MID) assigned to this card; must be unique within the deck. Leave blank to let the deck-assembly step assign one. | |
| Curve Id | curve_id | scalar | — | Integer ID of the LS-DYNA *DEFINE_CURVE that carries the effective stress–strain hardening data; used when the curve is pre-defined elsewhere in the deck rather than supplied inline via ‘hardening_curve’. | |
| Density | density | scalar | 7.89e-06 | Mass density in LS-DYNA consistent units (default 7.89e-06 kg/mm³ for steel); override when working in a different unit system or for a non-steel material. | |
| Elastic Modulus | elastic_modulus | scalar | 210 | Young’s modulus in pressure units consistent with the deck (default 210 GPa expressed as 210 in kN/mm² / GPa); override for non-steel materials or alternate unit systems. | |
| Poissons Ratio | poissons_ratio | scalar | 0.3 | Poisson’s ratio (dimensionless); default 0.3 is appropriate for most steels. Adjust for aluminium (~0.33), rubber-like materials, etc. | |
| Hardening Curve | hardening_curve | vector | — | Effective plastic stress–strain curve supplied as an inline vector (pairs of plastic-strain / true-stress values); used to populate the LC field of MAT_024. Leave null if ‘curve_id’ already references a pre-defined curve in the deck. | |
| Failure Strain | failure_strain | scalar | — | Effective plastic failure strain at element deletion (dimensionless); elements exceeding this value are eroded. Leave blank or 0 to disable strain-based erosion. | |
| Number Of Dig Points | numberof_dig_points | scalar | 201 | LCINT | |
| Use Log Interpolation | use_log_interpolation | string | no | Use LOG Interpolation option in the Keyword | |
| Viscoplasticity | vp | scalar | 0 | VP |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| dynakeyword_mat24_without_strain_rates_output_1 | dynakeyword_mat24_without_strain_rates_output_1 | text | Formatted LS-DYNA keyword text block (*MAT_PIECEWISE_LINEAR_PLASTICITY) ready to be included in a simulation deck; contains all populated fields and the inline or referenced hardening curve, with no strain-rate (LCSS/EPS/ES) entries. |
Disciplines¶
- cae.preprocessing.deck_authoring
- engineering.material.calibration
- engineering.material.library
Auto-generated from transformation schema. Worker id: dynakeyword_mat24_without_strain_rates. Schema hash: 33e97ca4b216. Hand-curated docs in workerexamples/ override this page when present.