New Keywords in 2020

New and modified features in Radioss.

2020

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New Starter Keywords

/ALE/SOLVER/FINT - Defines the numerical method for internal force integration
/EOS/NASG - Noble-Abel-Stiffened-Gas equation of state
/FAIL/COCKCROFT - Failure model based on Cockroft-Latham formulation
/FAIL/VISUAL - Failure model to track maximum stress or strain in an element
/FRIC_ORIENT - Defines the orthotropic friction direction in a part with an isotropic material
/FUNCT_SMOOTH - Smooth amplitude curves
/MAT/PLAS_PREDEF - Material with predefined value for the yield stress, ultimate stress, and corresponding strain. Only the material name needs to be entered.
/MAT/LAW103 (HENSEL-SPITTEL) - Material law based on Hansel-Spittel formulation
/MAT/LAW106 (JCOOK_ALM) - Johnson-Cook material with temperature dependent Young’s modulus and Poisson’s ratio
/MERGE/RBODY - Merge rigid bodies or add slave nodes to an existing rigid body

Modified Starter Keywords

/ALE/MUSCL - Added new flag IFLAG
/FAIL/HASHIN - Added new options I_frwave=2, and Imod
/FRICTION - New orthotropic friction model in the contact interfaces TYPE7, 19, 24 and 25
/INTER/SUB - Added support for contact interface /INTER/TYPE25
/INTER/TYPE11 - Added new option Irem_gap=2 to automatically manage self-impact in the edge to edge treatment
/INTER/TYPE18 - The ALE side can now be defined using a group of bricks (/GRBRIC) to allow compatibility with all ALE multi-fluid materials (/MAT/LAW151)
/INTER/TYPE19 - New parameters available: Irem_gap, %mesh_size and Irem_i2
/INTER/TYPE21 - New variable available P_skid.
/MAT/LAW12 (3D_COMP) and /MAT/LAW14 (COMPSO) - New option available $W_{p}^{r e f}$
/PROP/TYPE6 (SOL_ORTH) - New flags available I_tetra4 and I_tetra10
/RBODY - Ispher=2, Automatic correction of unphysical inertia in a rigid body. The previous method is available as Ispher=3.
/SENSOR/ENERGY - New sensor where the activation is controlled by the internal or kinetic energy of a user-defined part or subset.
/TH/BRIC and /TH/QUAD - Added new option QVIS
/TH/QUAD - Strain output for 2D solid elements (/QUAD) in the time history file for both isotropic and orthotropy element properties.
/ALE and /EULER - Local unit systems can now be set on:
- /MAT/LAW5, /MAT/LAW11, /MAT/LAW37, /MAT/LAW41, /MAT/LAW46, /MAT/LAW51, /MAT/LAW97
- /EBCS
- /DFS/LASER, /DFS/WAV_SHA
- /DFS/DETPOINT, /DFS/DETPLAN, /DFS/DETLINE, /DFS/DETCORD

New Engine Keywords

Modified Engine Keywords

/ADYREL - New options added T_start and T_stop
/H3D/SOLID/VECT and /H3D/QUAD/VECT - New H3D output to display the contact force in the finite volume cell. This is used with contact interface /INTER/TYPE18 and ALE material /MAT/LAW151.
/H3D/NODA/SSP - New visualization to display the speed of sound on the outer and inner surface of finite volume airbag (/MONVOL/FMVBAG1).
/H3D/SOLID/COLOR and /H3D/QUAD/COLOR - New color function output for Multi Material ALE laws. The phase or sub-material is displayed with a color corresponding to the phase sub-material number.

Obsolete Keywords

New Starter Keywords

/CHECK/RFILE/OFF - Starter option to check quickly the model with the Radioss Starter. The restart file will be not written. This option is also available as a Starter executable command line option -check=norst.
/MAT/LAW108 (SPR_GENE) - Material for spring element with the same behavior as spring property /PROP/TYPE8
/MAT/LAW113 (SPR_BEAM) - Material for spring element with the same behavior as spring property /PROP/TYPE13
/PROP/TYPE23 (SPR_MAT) - The property for spring stiffness defined in materials /MAT/LAW108 (SPR_GENE) or /MAT/LAW113 (SPR_BEAM)

Modified Starter Keywords

/FAIL/ENERGY - Abscissa scale factor for energy sale factor function versus strain rate
/FRAME/FIX, /HEAT/MAT, /SKEW/FIX - Compatible with local /UNIT systems
/INTER/TYPE19 - New flag I_the to active the thermal behavior in the contact interface
/MAT/LAW24 (CONC) - New parameters for concrete material law with I_cap =2: Reference plastic strain for plastic hardening (Eps₀), Reduction factor for plastic hardening default (h_fac)
/MAT/LAW63 (HANSEL) - New parameters latent heat of martensite (H_l) and Taylor-Quinney coefficient ( $η$ ) for element temperature computation due to the phase change
/MAT/LAW77 - New initial pressure FP₀ option. F_cut default value is changed from 1E+30 to 1E+20
/MAT/LAW81 - Two new scale factors c₀ and P_b0 for the unit conversion
/MAT/LAW92 - New scale factor for the function of Arruda-Boyce
/MAT/LAW95 (BERGSTROM_BOYCE) - New reference stress value Tau_ref for the Bergstrom-Boyce viscous model
/MAT/LAW100 (MNF) - New reference stress value Tau_ref for the Bergstrom-Boyce viscous model. New scale factor for the function of Arruda-Boyce model
/MONVOL/GAS - New option I_equi to take into account the volume change during the relaxation/loading phase defined by T_relax

New Engine Keywords

/RFILE/OFF - New option to disable the restart file creation even at the end of the computation. This option is also available as an Engine executable command line option -norst.

Modified Engine Keywords