Initial Velocity dialog box (LS-DYNA)

Type
Type	Controls the type of initial velocity definition you create.Select INITIAL_VELOCITY to define the translational and rotational velocities for selected nodes with respect to the global axis.Select INITAL_VELOCITY_GENERATION to define the initial velocities of translating bodies with respect to the global axis and the initial velocities of rotating bodies around a selected axis.Select INITIAL_VELOCITY_RIGID_BODY define initial translational and rotational velocities for selected rigid bodies.
Destination Folder
Constraint Container	Specifies the folder in the Simulation Navigator in which the boundary condition is stored. The list includes the root container and existing folders that you created using the New Folder command. Examples of a root container include Load Container, Constraint Container, and Simulation Object Container.
Folder Manager	Displays a hierarchical listing of existing folders. To create a new folder, right-click any level of the hierarchy and choose New Folder.
Model Objects (NSID)
Group Reference	Lets you select a group of nodes.For more information, see Group Reference options.
Select Object	Lets you select the nodes for which you want to define velocities.Use the Excluded options to remove individual entities, such as edges, from your selection.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Nodes to be Exempted (NSIDEX)
Select Object	Lets you select nodes that you want to exempt from the specified velocities. These are nodes that may have other initial velocities.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.

INITIAL_VELOCITY options

Box Definition
Include All Nodes in a Box (BOXID)	Lets you define an initial velocity for all nodes that lie within a box.
Box Diagonal First Corner****Box Diagonal Second Corner	Lets you specify the first and second corners that define the box.
Initial Velocity
**Translational in Global X (VX)****Translational in Global Y (VY)**Translational in Global Z (VZ)	Lets you specify the initial velocity for the nodes in the X, Y, and Z directions.
**Rotational about Global X (VXR)****Rotational about Global Y (VYR)**Rotational about Global Z (VZR)	Lets you specify the initial rotational velocity for the nodes about the X, Y, and Z axes.
Initial Velocity of Exempted Nodes
**Translational in Global X (VXE)****Translational in Global Y (VYE)**Translational in Global Z (VZE)	Lets you specify the initial velocity for the exempted nodes in the X, Y, and Z directions.
**Rotational about Global X (VXRE)****Rotational about Global Y (VYRE)**Rotational about Global Z (VZRE)	Lets you specify the initial rotational velocity for the exempted nodes about the X, Y, and Z axes.

INITIAL_VELOCITY_GENERATION options

Angular Velocity
Angular Velocity (OMEGA)	Lets you define the angular velocity about the rotational axis.
Angular Axis Direction****Specify Vector Specify Point	Lets you define the axis of rotation.Use the Specify Vector and Specify Point options to select a vector and point to define the axis of rotation.
Translational Velocity
**Initial Velocity in Global X (VX)****Initial Velocity in Global Y (VY)**Initial Velocity in Global Z (VZ)	Lets you specify the initial velocity for the nodes in the X, Y, and Z directions.
Initial Velocities of Slave Nodes and Parts (IVATN)	Controls how the software handles setting the initial velocities of slave nodes and parts.Select (0) Ignore to ignore slave parts.Select (1) Assign Master to assign the initial velocities of the master part to any slave parts and nodes.
Apply Velocities (PHASE)	Lets you control at which phase of the analysis Abaqus should apply the velocities.Select (0) Immediately to apply the velocities immediately.Select (1) After Dynamic Relaxation to apply the velocities after dynamic relaxation occurs.
Start Time
Time	Lets you define a time to initialize velocities after time zero. Time zero starts after dynamic relaxation. Note: The software only applies the specified Time value if you select (1) After Dynamic Relaxation from the Apply Velocities (PHASE) list.

INITIAL_VELOCITY_RIGID_BODY options

Direction
Velocity CSYS	Lets you specify the coordinate system in which to specify the translational and rotational velocities.
Translational Velocity
**Initial Velocity in Global X (VX)****Initial Velocity in Global Y (VY)**Initial Velocity in Global Z (VZ)	Lets you specify the initial translational velocity for the rigid body in the X, Y, and Z directions.
Rotational Velocity
**Initial Rotation about Global X (VXR)****Initial Rotation about Global Y (VYR)**Initial Rotation about Global Z (VZR)	Lets you specify the initial rotational velocity for the rigid body in the X, Y, and Z directions.
Rigid Body
Physical Property Tables	Lets you select one or more physical property tables from the Physical Property Table Manager dialog box to define the rigid body or bodies.

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Initial Velocity dialog box (LS-DYNA), Simcenter 3D 2021.1 Series

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