To Specify the Velocity Vector Direction

Use the Direction field on the Initial Condition Definition dialog box to specify the direction for the velocity vector you are applying. Select one of these options:

• Typed Vector—A typed vector is a vector defining direction in three dimensions that you can specify with a Cartesian set of axes x, y, and z. Choose a body and enter coordinates to indicate the direction of the vector. The direction is relative to the origin of the selected body coordinate system. You can select the WCS or a body coordinate system.

• Straight edge, curve or axis—Select a straight edge, a curve, or a datum axis in the assembly to define the direction of the velocity vector.

• Point to Point—Select two body points or vertices, one for the origin of the vector and another to indicate the direction. If one of the two selected points is not a point to which you are applying the initial condition, then the velocity vector is parallel to the line between the two points.

A direction arrow displays the direction of the velocity vector. Use the Flip button if you want to reverse the direction of the vector for Point to Point or Straight edge, curve, or axis.