New Keywords in 2025

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New Starter Keywords

/DAMP/FREQUENCY_RANGE - to define a constant damping over a range of frequencies on set of parts on the solid or shell element deformation
/DFS/DETPOINT/SET - locates the detonation point defined in the node group and set lighting time for an explosive material law
/EOS/COMPACTION2 - describes pressure for a porous media such as soil or foam which can be compacted and unloaded
/FUNCT_PYTHON - defines a function defined with Python script
/INISPHCEL/FULL - describes the initial state for a Smooth Particle Hydrodynamic (SPH)
/MAT/LAW169 (ARUP_ADHESIVE) - an elastoplastic connection material law with coupled damage and failure
/SENSOR/PYTHON - describes a sensor defined Python script and used to activate or deactivate an object
/SENSOR/USER1, /SENSOR/USER2 or /SENSOR/USER3 - defines a user sensor
/VISC/PLAS - an isotropic elasto-plastic damping option

Modified Starter Keywords

/BEAM - new parameters, VX, VY and VZ to define the local coordinate system
/CLOAD and /PLOAD - new Itypfun flag
/DEF_SOLID, /PROP/TYPE6 (SOL_ORTH) and /PROP/TYPE14 (SOLID) - new element distortion control flag, I_control
/EOS/GRUNEISEN - new parameters, PO and PSH
/FAIL/BIQUAD, /FAIL/COCKCROFT, /FAIL/ENERGY, /FAIL/GENE1, /FAIL/JOHNSON, and /FAIL/TENSSTRAIN - added new parameter, FAILIP
/FAIL/TAB2 - new parameter VOLFRAC
/MAT/LAW50 (VISC_HONEY) - new parameters for compacted mode
/MAT/LAW87 (BARLAT2000) - added 3 directions orthotropic yield stress
/MAT/LAW126 (JOHNSON_HOLMQUIST_CONCRETE) - new element post-failure behavior flag, IFAILSO
/PROP/TYPE20 (TSHELL), /PROP/TYPE21 (TSH_ORTH), /PROP/TYPE22 (TSH_COMP) - new element distortion control flag, Icontrol

New Engine Keywords

/IMPL/MUMPS/AUTOCORE - MUMPS solver will automatically switch from in-core memory to out-of-core memory
/STATE/SPHCEL/FULL - describes the stress state for Smooth Particle Hydrodynamic (SPH)

New LS-DYNA Keywords

*CONTACT_AUTOMATIC_BEAMS_TO_SURFACE - define nodes of beam elements to surface contact interface
*DEFINE_CURVE_SMOOTH - defines a simple smooth function, mainly used to impose a displacement on metal forming tool
*DEFINE_HEX_SPOTWELD_ASSEMBLY_{OPTION} - define a cluster of connection solid elements for post-processing and failure control of the solid connection element
*ELEMENT_SEATBELT_PRETENSIONER - defines a 1D seat belt pretensioner element
*ELEMENT_SEATBELT_RETRACTOR - defines a 1D seat belt retractor element
*ELEMENT_SEATBELT_SENSOR - defines a seat belt sensor
*INITIAL_STRESS_SOLID - initializes the strain for solid elements in the global coordinate system
*MAT_005 (SOIL_AND_FOAM) - defines an isotropic, elastic-plastic simple material model for representing soil, concrete, or crushable foam
*MAT_073 (LOW_DENSITY_VISCOUS_FOAM) - defines a visco-elastic low density foam tabulated material for solid elements
*MAT_111 (JOHNSON_HOLMQUIST_CONCRETE) - defines a material law that is based on the theory of Johnson-Holmquist-Cook model theory
*MAT_122 (HILL_3R) - defines an orthotropic elastoplastic material using linear or tabulated stress versus plastic strain input.
*MAT_183 (MAT_SIMPLIFIED_RUBBER_WITH_DAMAGE) - defines an incompressible rubber material with uniaxial tensile/compression test results as input curve
*MAT_ADD_DAMAGE_GISSMO - additional failure model defining the plastic strain at failure, function of stress triaxiality, strain rate, Lode angle, element size, and temperature
*MAT_ADD_THERMAL_EXPANSION - used to add thermal expansion property for material

Modified LS-DYNA Keywords

*CONTACT_AIRBAG_SINGLE_SURFACE, *CONTACT_AUTOMATIC_GENERAL, *CONTACT_AUTOMATIC_NODES_TO_SURFACE, *CONTACT_AUTOMATIC_SINGLE_SURFACE, *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE, *CONTACT_ERODING_NODES_TO_SURFACE, *CONTACT_ERODING_SINGLE_SURFACE, *CONTACT_ERODING_SURFACE_TO_SURFACE and *CONTACT_FORCE_TRANSDUCER_PENALTY - new TITLE option under OPTION3
*DATABASE - new options, PLLOUT and TPRINT
*DEFINE_VECTOR - new identifier, skew_ID
*LOAD_BODY - new parameters

Obsolete Keywords

All Optimization Keywords