2023
This manual provides a detailed list of all the input keywords and options available in Radioss.
This manual provides a list of all the solution definition keywords and options available in Radioss.
Engine Keyword In this group keywords are used to generally define the output style, control of computation, damping and ALE setup during the computation.
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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.
This manual provides a list of all the model definition keywords and options available in Radioss.
Engine Keyword With this keyword it is possible to modify grid formulation parameters, which initially was set in Starter keyword /ALE/GRID/DISP. (Altair average displacement grid formulation).
Engine Keyword With this keyword it is possible to modify grid formulation parameters, which initially were set in Starter keyword /ALE/GRID/DONEA.
Engine Keyword With this keyword it is possible to modify grid formulation parameters which initially be set in Starter keyword /ALE/GRID/SPRING. (Altair bar method for grid velocity computation).
Engine Keyword With this keyword it is possible to modify grid formulation parameters, which initially were set in Starter keyword /ALE/GRID/STANDARD. (Altair standard method for grid velocity computation).
Engine Keyword No grid calculation is performed when this keyword is used. Grid does not move, unless constrained otherwise.
Engine Keyword An ALE link definition /ALE/LINK/VEL (Starter) can be deactivated.
Engine Keyword An ALE link definition /ALE/LINK/VEL (Starter) which was deactivated during a previous Engine run can be activated again with this keyword.
Engine Keyword With ALE links on grid velocities, given nodes are linked to the given main grid velocities. You can specify the direction or a combination of directions. This definition is only taken into account during the current run.
Engine Keyword The MUSCL scheme is enabled by default. This option disables it and leads to first order precision.
Engine Keyword Deactivates the ALE / EULER parts that are listed.
Engine Keyword Activates the ALE / EULER parts that are listed.
Engine Keyword This option defines the numerical method for internal force integration. This is relevant only for brick element and the ALE legacy solver (momentum equation solved with FEM).
Engine Keyword Disable the SUPG formulation for momentum advection (ALE and EULER).
Engine Keyword In this group, keywords are used for modification (deletion or add options) in Engine.
Generates animation files containing results according to the keywords specified. The keywords are specified in the topics within Animation and Post-processing Output Files.
Engine Keyword In this group keywords are used for implicit solution. Different implicit solver methods (linear, nonlinear, buckling or quasi-static), different options to control the implicit computation, different implicit time step method and implicit output messages are introduced.
Engine Keyword In this group, keywords are used to define the kinematic condition (constrain/release rotation or translation DOF) and initial condition (rotational/translational velocity).
Engine Keyword In this group, keywords are used to define different time step control (STOP, KILL, CST or DEL, and so on) for different entities (shell, brick, beam, airbag, interface, and so on) during the computation.
Engine Keyword In this group, keywords are used to output different info (like stress, strain, orthotropy direction, temperature, and so on) in a state file (STA-File).
Engine Keyword Keywords that are still supported, but no longer maintained (*) are considered obsolete.
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.
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