ABAQUS Volume II: I–Z - Manual (Page 171)

*MOTION
The following data are required only for three-dimensional cases:
5. Global z-component of point a on the axis of rotation.
6. Global x-component of point b on the axis of rotation.
7. Global y-component of point b on the axis of rotation.
8. Global z-component of point b on the axis of rotation.
Repeat this data line as often as necessary to define rotational motion for different nodes.
Data lines to define motion in user subroutine
UMOTION (USER):
First line:
1. Node set label or node number.
2. First translational component of motion prescribed (only degrees of freedom 1, 2, or 3 can be
entered). See “Conventions,” Section 1.2.2 of the ABAQUS Analysis User’s Manual, for a
definition of the numbering of degrees of freedom in ABAQUS.
3. Last translational component of motion prescribed (only degrees of freedom 1, 2, or 3 can be
entered). This field can be left blank if motion for only one component is being prescribed.
4. Magnitude of the translational displacement or rotation. This magnitude can be redefined in
user subroutine UMOTION.
Repeat this data line as often as necessary to define the nodes and degrees of freedom that will have
their motion prescribed by user subroutine
UMOTION.
13.21–3
ABAQUS Version 6.1 Module: ID:
Printed on: