2023.1
This manual provides a detailed list of all the input keywords and options available in Radioss.
This manual provides a list of all the model definition keywords and options available in Radioss.
These materials can be used to represent other materials.
View new features for Radioss 2023.1.
Radioss® is a leading explicit finite element solver for crash and impact simulation.
Discover Radioss functionality with interactive tutorials.
This manual provides details on the features, functionality, and simulation methods available in Altair Radioss.
Current Radioss format uses the 12x extension format.
This format allows running either Starter or Engine with the same file.
New and modified features in Radioss.
Block Format Keyword
The Smooth Particle Hydrodynamics method formulation is used to solve the equations of mechanics, when particles are free from a meshing grid.
Block Format Keyword In this group, keywords are used to set default value, global parameter, analysis type, input/output print, damping and ALE and CFD treatment for the whole model. For default value, it is still possible to overwrite in each specific keywords.
Block Format Keyword In Radioss, two node types are available. They use Cartesian coordinate to describe the position of each node.
Block Format Keyword In this group, keywords are used to combine material and property information (/PART), assemble model (/SUBSET) or define a separate model (//SUBMODEL).
Block Format Keyword Interfaces solve the contact and impact conditions between two parts of a model. Several interface types are available in Radioss and use different contact treatments.
Block Format Keyword The following tables list the compatibility options for each of the material laws.
These materials can be used to represent elasto-plastic materials.
These materials can be used to represent hyper and visco-elastic materials.
These materials can be used to represent composite and fabric materials.
In Radioss these materials can be used to represent rock or concrete materials.
These materials can be used to represent honeycomb materials.
These materials can be used to represent connection materials.
Block Format Keyword This material can be used to define elements to act as a void, or an empty space.
Block Format Keyword This keyword defines an isotropic, linear elastic material using Hooke's law. This law represents a linear relationship between stress and strain. It is available for truss, beam (type 3 only), shell and solid elements.
Block Format Keyword This law describes the behavior of superelastic materials. It allows modeling the behavior of the shape memory alloys (such as Nitinol).
Block Format Keyword Describes the P- porous material model. This material describes ductile Porous material with Herrmann model. It only works with 8-node brick element and is not compatible with ALE.
Block Format Keyword This spring material works with six independent modes of deformation and accounts for nonlinear stiffness, damping and different unloading.
Block Format Keyword This beam type spring material works as a beam element with six independent modes of deformation. This spring accounts for nonlinear stiffness, damping and different unloading.
Block Format Keyword Describes the gas molecular weight and specific heat coefficients.
Block Format Keyword This law describes the user material.
These materials can be used to represent multi-material, fluid and explosive materials.
Block Format Keyword ALE and CFD options used to activate ALE formulation or Eulerian formulation for a given material law.
Used by Radioss to compute the hydrodynamic pressure.
The supported failure models in Radioss.
Block Format Keyword Monitored volumes can be used to model an airbag, tire, tank, or any closed volume.
Block Format Keyword Radioss supports several different kinematic constraints, which are mainly used to impose acceleration, velocity, displacement or temperature in structure or constraint the moving of structure. They are mutually exclusive for each degree-of-freedom (DOF). Two kinematic conditions applied to the same node may be incompatible.
Block Format Keyword In Radioss the following load cases are available. Stress/strain as initial state could be considered by modeling, as well as pressure, gravity, and thermal load.
Block Format Keyword In this group, tools like transformation, frames, skews, and curve are introduced.
Block Format Keyword Keywords in this group are used to define how to select a group of node, part, elements, lines, or surfaces.
Block Format Keyword Adaptive Meshing is used in metal forming to divide the element to better describe the geometry. /ADMESH/GLOBAL and /ADMESH/SET are not available for SPMD computation.
Block Format Keyword Time histories output for different element groups, section output, or gauge output are described in this group.
Block Format Keyword Keywords that are still supported, but no longer maintained (*) are considered obsolete.
This manual provides a list of all the solution definition keywords and options available in Radioss.
This manual provides a list of LS-DYNA input files available in Radioss.
Optimization Keyword This manual contains the description of the keywords for the Radioss optimization. This manual is compatible with the version 2018 of Radioss.
This manual contains the description of the keywords for the Radioss Multi-Domain.
This manual presents examples solved using Radioss with regard to common problem types.
This manual presents solved verification models.
This section provides quick responses to typical and frequently asked questions regarding Radioss.
This manual provides detailed information about the theory used in the Altair Radioss Solver.
This manual describes the interface between Altair Radioss and user subroutines.
View All Altair HyperWorks Help