/INIV/AXIS/Keyword3/1

/INIV/AXIS - Initialize Velocity with respect to an Axis by Range

Description

Initialize rotational velocity about an axis and translational velocity.

Format

Frame_ID

VXt VYt VZt Vr

N1first , N2last …, Nifirst , Nilast

Data	Description	Si Unit Example
Keyword3	Direction X, Y, and Z of the frame defining the rotation axis.
Frame_ID	Frame identifier. (Integer)
VXt , VYt , VZt , Vr	Translational velocity components in the local frame and rotational velocity about the axis. (Real)	or
N1first , N2last …, Nifirst , Nilast	First and last list of nodes.

1.	If frame_ID is not zero, the initial velocities are applied with respect to this local frame.

2.	Once V t is expressed in the global system, the velocities are initialized with respect to:

Where, U is the vector defining the rotation axis and O represents a point on the axis and is set as the origin of the frame.