This option is used to define the angular velocity of material transported through the mesh of a deformable body or the transport of material relative to the reference node of a rigid body during a steady-state transport analysis.
Product: ABAQUS/Standard
Type: History data
Level: Step
Set this parameter equal to the name of the amplitude curve (defined in the *AMPLITUDE option) that gives the time variation of the velocity throughout the step (“Amplitude curves,” Section 19.1.2 of the ABAQUS Analysis User's Manual).
If this parameter is omitted, the reference magnitude is applied immediately at the beginning of the step or linearly over the step, depending on the value assigned to the AMPLITUDE parameter on the *STEP option (see “Procedures: overview,” Section 6.1.1 of the ABAQUS Analysis User's Manual).
Include this parameter to indicate that the magnitude of the rotational velocity will be defined in user subroutine UMOTION. If this parameter is used, any magnitudes defined by the data lines can be redefined in the user subroutine.
First line:
Node set label or node number.
Magnitude of the rotational velocity (in radians/time). This magnitude will be modified by the *AMPLITUDE specification if the AMPLITUDE parameter is used. For a deformable body the rotation is assumed to be about the axis defined on the *SYMMETRIC MODEL GENERATION option. For a rigid body of type REVOLUTION the rotation is assumed to be about the axis of revolution of the body.
Repeat this data line as often as necessary to define rotational motion on nodes of different parts of the model.