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Reference Guide
This manual provides a detailed list of all the input keywords and options available in Radioss.
LS-DYNA Input
This manual provides a list of LS-DYNA input files available in Radioss.
*INITIAL
*INITIAL_VELOCITY
LS-DYNA Input Interface KeywordDefines initial velocity of a node set.

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Radioss^® is a leading explicit finite element solver for crash and impact simulation.
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This manual provides a detailed list of all the input keywords and options available in Radioss.
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  Current Radioss format uses the 12x extension format.
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  This format allows running either Starter or Engine with the same file.
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  This manual provides a list of all the model definition keywords and options available in Radioss.
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- LS-DYNA Input
  This manual provides a list of LS-DYNA input files available in Radioss.
  - *AIRBAG
  - *BOUNDARY
  - *CONSTRAINED
  - *CONTACT
  - *CONTROL
  - *DAMPING
  - *DATABASE
  - *DEFINE
  - *ELEMENT
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  - *HOURGLASS
    LS-DYNA Input Interface KeywordDefine solid and hourglass formulation for 8-node solid elements.
  - *INCLUDE
  - *INITIAL
    - *INITIAL_FOAM_REFERENCE_GEOMETRY
      LS-DYNA Input Interface KeywordDefines the reference state for elements belonging to a part, using given nodal coordinates.
    - *INITIAL_STRAIN_SHELL
      LS-DYNA Input Interface KeywordInitializes the strain for shell elements in the global coordinate system.
    - *INITIAL_STRESS_SHELL_{OPTION}
      LS-DYNA Input Interface KeywordDefines the reference state for elements belonging to a part, using given nodal coordinates.
    - *INITIAL_VELOCITY
      LS-DYNA Input Interface KeywordDefines initial velocity of a node set.
    - *INITIAL_VELOCITY_GENERATION
      LS-DYNA Input Interface KeywordDefine both translational and rotational initial velocities.
    - *INITIAL_VELOCITY_NODE
      LS-DYNA Input Interface KeywordThis keyword defines an initial translational and rotational velocity of a node.
    - *INITIAL_VELOCITY_RIGID_BODY
      LS-DYNA Input Interface KeywordDefine initial velocity of a rigid body.
  - *INTEGRATION_SHELL
    LS-DYNA Input Interface KeywordDefine user-defined through the thickness integration rules for the composite shell element.
  - *KEYWORD
    LS-DYNA Input Interface KeywordThis keyword should always be the first card of the input file. Optionally used with *CONTROL_UNITS card to specify model units.
  - *LOAD
  - *MAT
  - *NODE
    LS-DYNA Input Interface KeywordDefines a node number and nodal coordinates in the global coordinate system.
  - *PART
    LS-DYNA Input Interface KeywordDefines a part, which combines material and property information.
  - *RIDIGWALL
  - *SECTION
  - *SET
- Optimization Keywords
  Optimization Keyword This manual contains the description of the keywords for the Radioss optimization. This manual is compatible with the version 2018 of Radioss.
- Multi-Domain
  This manual contains the description of the keywords for the Radioss Multi-Domain.
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Theory Manual
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*INITIAL_VELOCITY

LS-DYNA Input Interface KeywordDefines initial velocity of a node set.

Format


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*INITIAL_VELOCITY
`set_ID`	`Exset_ID`		`IRIGID`	`CID`
`VX`	`VY`	`VZ`	`VXR`	`VYR`	`VZR`

Read if Exset_ID > 0


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
Blank

Definition


Field	Contents	SI Unit Example
`set_ID`	Node set identifier. = 0 The velocity is applied to all nodes > 0 The velocity is applied to the nodes in the node set identifier (Integer)
`Exset_ID`	Node set identifier of nodes that are exempted from the initial velocities (`VX`, `VY`, `VZ`, `VXR`, `VYR`, `VZR`). (Integer)
`IRIGID`	Option to overwrite velocities defined in PART_INERTIA or CONSTRAINED_NODAL_RIGID_BODY_INERTIA. = 0 No overwrite. = -1 or -2 Overwrite. (Integer)
`CID`	Coordinate system identifier. (Integer)
`VX`, `VY`, `VZ`	Translational nodal velocity components. (Real)	$[\frac{m}{s}]$
`VXR`, `VYR`, `VZR`	Rotational nodal velocity components. (Real)	$[\frac{rad}{s}]$

Comments

This keyword maps to /INIVEL.