New Keywords in 2022

New and modified features in Radioss.

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New Starter Keywords

/EBCS/NRF - New boundary condition option generalized for all ALE material laws
/EOS/IDEAL-GAS-VT - Ideal gas equation of state (volume – temperature)
/FAIL/GENE1 - For element deletion from maximum pressure, minimum principal strain, equivalent plastic strain, volumetric strain, minimum pressure, maximum principal strain, equivalent stress, shear strain, threshold stress, temperature or time
/FAIL/ORTHBIQUAD - Orthotropic strain-based failure model
/FAIL/RTCL - Failure model based on RTCL formulation
/FAIL/SAHRAEI - Failure model from MIT for battery material failure
/INIBRI/EREF - Option to initialize solid element with total or small strain formulation
/MAT/LAW114 (SPR_SEATBELT) - 1D seatbelt spring material set
/MAT/LAW117 - Mixed mode with linear softening
/MAT/LAW119 (SH_SEATBELT) - Material law for 2D seatbelt models (beta version)
/MAT/LAW121 (PLAS_RATE) - Elastic-plastic material with specific strain rate dependency
/MAT/LAW200 (MDS) - Multiscale Designer material law
/NONLOCAL/MAT - Non-local method, initially in /FAIL/GURSON, is extended to all failure models based on plastic strain by adding this new option in the material law
/PROP/TYPE27 (SPR_BDAMP) - Damper spring property with one translational DOF
/RETRACTOR/SPRING - 1D retractor for seatbelt
/SENSOR/VEL - Sensor based on node velocity
/SLIPRING/SHELL - Slipring for 2D seatbelt models (beta version)
/SLIPRING/SPRING - 1D slipring for seatbelt elements
/TH/RETRACTOR - Time history output for the retractor element (/RETRACTOR)
/TH/SLIPRING - Time history output for the slipring element (/SLIPRING)
/TH/TRIA - Time History output for the /TRIA element

Modified Starter Keywords

/ALE/MAT, /EULER/MAT - Removed Flrd flag
/FAIL/ALTER - Added new failure model based on Phd Thesis of Christopher Brokmann
/FAIL/GURSON - Added parameter $L_{e}^{M A X}$ for automatic non-local length computation
/INIBRI/STRA_F and /INIBRI/STRA_FGLO - Added new fields nptr, npts, nptt, and nlay
/INIBRI/STRS_F and /INIBRI/STRS_FGLO - Added new fields nptr, npts, nptt, nlay and grbric_ID
/INTER/SUB - Added feature to scale the damping value function of time with user input function
/INTER/TYPE25: Added new option Inacti= -1 to model the pressfit behavior between 2 solid components. Initial intersection is removed smoothly from the beginning of the contact activation time.
/LOAD/PBLAST - New Abaqus with ground reflexion and Mach front
/INTER/TYPE24 - Added new parameter Etc to input plastic tangent
The HBP parameter is now correctly evaluated by Radioss and a warning message is displayed in case of negative values.
/MADYMO/EXFEM - Possible to define up to 10 parts per lines
/MAT/LAW24 (CONC) - New parameter Etc to input plastic tangent.
/MAT/LAW34 (BOLTZMAN) - Material compatible with shell (/SHELL and /SH3N) elements, beam elements (/BEAM) and truss elements (/TRUSS)
/MAT/LAW35 (FOAM_VISC) - Added new strain rate filtering
/MAT/LAW43 (HILL_TAB) - Added new strain-rate filtering parameters, F_cut and F_smooth
/MAT/LAW57 (BARLAT3) - Added strain rate filtering
/MAT/LAW78 - Added new parameters $C_{1}^{K H}$ and $C_{2}^{K H}$ .
/MAT/LAW80 - Enhanced with new developments in hot stamping/press hardening to better predict the martensite volume fraction
/MAT/LAW83 - Added option I_comp=1
/MAT/LAW87 (BARLAT2000) - Added new hardening formulation based on Chaboche & Rousselier formulation and Hansel formulation
/MONVOL/FVMBAG1 and /MONVOL/FVMBAG2 - Added new option I_switch=2
/PROP/TYPE9 (SH_ORTH), and /PROP/TYPE10 (SH_COMP) - Added new skew_ID and I_P flags
/PROP/TYPE6 (SOL_ORTH), /PROP/TYPE11 (SH_SANDW), /PROP/TYPE16 (SH_FABR), /PROP/TYPE51, and /STACK - Added new I_P flag
/PROP/TYPE16 (SH_FABR) - Added new parameter d_n for the numerical damping of QEPH element
/SENSOR/ENERGY - Added new feature to activate the sensor with the total energy and new feature to activate the sensor when the internal and kinetic energy is constant for a defined time value.
/TH/BRIC - Variable yield scale factor from failure surface k for the concrete material (/MAT/LAW24) is output with the variable VK in the time history
/TH/QUAD - Added new outputs for 2D solid element to display material velocity, speed of sound & Mach number in the time history file
Updated the documentation according to the current available variables.
/VISC/PRONY - Added new viscous model defined by time relaxation curve or Dynamic Mechanical Analysis (DMA). Radioss automatically fits the viscous parameters (prony series values).

New Engine Keywords

/ALE/MUSCL/OFF - Disable MUSCL scheme
/ANIM/VECT/PCONT2 and /ANIM/NODA/PCONT2 - Added new output option to display contact pressure for tied contact
/DTTSH - Added option to have a higher time step (almost the same as a shell's) for thick shells (/PROP/TYPE20, /PROP/TYPE21, /PROP/TYPE22) taking into account only the “in plane” surface
/H3D/*/ENTHV: Added new H3D output volumic enthalpy for solid and SPH element
/H3D/*/ENTHM: Added new H3D output massic enthalpy for solid and SPH element
/H3D/*/ENTH: Added new H3D output to display enthalpy in the solid and SPH element
/H3D/*/EINTV: Added new H3D output for solid and SPH material
/H3D/*/EINTM: Added new H3D output massic internal energy for solid and SPH element
/H3D/RBE2/SINGLE_PART - Display all RBE2 in a single part
/H3D/RBE3/SINGLE_PART - Display all RBE3 in a single part
/H3D/RBODY/SINGLE_PART - Display all rigid bodies in a single part
/H3D/SHELL/MDS/* and /H3D/SOLID/MDS/* - Added new .h3d output for the MDS material law
/H3D/SHELL/PEXT and /H3D/SOLID/PEXT - Added new output to display the pressure imposed by the options /PLOAD, /LOAD/PFLUID, /LOAD/PBLAST and /BEM/DAA
/H3D/SOLID/THIC: Added new output option to display average thickness of thick shell element
/H3D/SOLID/THIN: Added new output option to display % thinning of thick shell element
/H3D/SHELL/TENS/BSTRESS: Backstress tensors for shell elements can be output in .h3d file for /MAT/LAW36 (1), /MAT/LAW78 (3) and /MAT/LAW87 (1 to 4)
/H3D/SOLID/TENS/BSTRESS: Backstress tensors for solid elements can be output in .h3d file for /MAT/LAW36 (1) and /MAT/LAW78 (3)
/H3D/RBE2/SINGLE_PART - Added new option in the native H3D output to display only 1 component for all RBE2s
/H3D/RBE3/SINGLE_PART - Added new option in the native H3D output to display only 1 component for all RBE3s
/H3D/RBODY/SINGLE_PART - Added new option in the native H3D output to display only 1 component for all RBODYs
/INIV/AXIS/Keyword3/2 - Initialize rotational velocity about an axis and translational velocity on a node set
/INIV/ROT/Keyword3/2 - Initialize rotational velocity in the specified direction X, Y or Z on a node set
/INIV/TRA/Keyword3/2 - Initialize translational velocity in the specified direction X, Y or Z on a node set
/MASS/RESET - Added option to reset the mass added in the previous run due to nodal or contact time step treatment at the beginning of the run
/STATE/BRICK/EREF - Added new option to output reference state for solid element with total or small strain formulation
/STATE/SHELL/THICK - Writes shell thickness values to the state file

Modified Engine Keywords

/IMPL/QSTAT/MRIGM - Added new option to set 3 reference nodes for the rigid body mode computation.
/IMPL/SOLVER: only PCG and MUMPS implicit solvers are kept in Radioss. The other ones are removed. MUMPS solver is now the default solver.
/INIV/AXIS/Keyword3/2, /INIV/ROT/Keyword3/2, /INIV/TRA/Keyword3/2 - Added new option to define initial velocity on a node set defined in the model.
/MAT/LAW24 (CONC) - The H_bp parameter is now correctly evaluated by Radioss and a warning message is displayed in case of negative values.
/STOP/LSENSOR - Added new flag to output state file with LS-DYNA format (.dynain).
/TH/QUAD - Updated the documentation according to current available variables.

New LS-DYNA Keywords

*AIRBAG_ADIABATIC_GAS_MODEL_ID - Defines a one-chambered airbag filed by adiabatic gas
*CONTACT_ERODING_NODES_TO_SURFACE - Define nodes to surface contact interface
*CONTACT_FORCE_TRANSDUCER_PENALTY - Accumulates output for contact forces
*CONTACT_NODES_TO_SURFACE - Define nodes to surface contact interface
*DEFINE_TRANSFORMATION - Defines a node and entities transformation(s) used in *INCLUDE_TRANSFORM
*INTEGRATION_SHELL - Define user-defined through the thickness integration rules for the composite shell element
*LOAD_GRAVITY_PART - Defines gravity load applied to a part or to a set of parts
*LOAD_SHELL - Defines pressure load on a single shell element or on a set of shell elements
*MAT_138 (COHESIVE_MIXED_MODE) - Expresses a constitutive relation of ductile adhesive materials in 2 modes for normal and tangential directions
*SET_BEAM_INTERSECT, *SET_DISCRETE_INTERSECT, *SET_NODE_INTERSECT, *SET_SEGMENT_INTERSECT, *SET_SHELL_INTERSECT, *SET_SOLID_INTERSECT - Defines a set from the intersection of set lists of elements.

Modified LS-DYNA Keyword

*CONSTRAINED_NODAL_RIGID_BODY - Added available to set NSID=0
*CONTACT_AUTOMATIC_GENERAL, *CONTACT_AUTOMATIC_NODES_TO_SURFACE, *CONTACT_AUTOMATIC_SINGLE_SURFACE, *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE, and *CONTACT_ERODING_SINGLE_SURFACE - Added parameter SOFT of the additional card A is read
*DATABASE_BINARY_INTFOR - Option FILE is accounted for
*INITIAL_VELOCITY - Exempted nodes are accounted for
*SECTION_BEAM - Predefined sections SECTION_08 and SECTION_11 defined with truss section (ELFORM=3) are now supported
*SET_BEAM, *SET_DISCRETE, *SET_NODE, *SET_PART, *SET_SEGMENT, *SET_SHELL, and *SET_SOLID - Added option COLLECT.
*SET_SEGMENT - Added GENERAL

New Keywords in 2022

New Starter Keywords

Modified Starter Keywords

New Engine Keywords

Modified Engine Keywords

New LS-DYNA Keywords

Modified LS-DYNA Keyword

Obsolete Keywords