Setting Up Motion for Transient Projects

For projects where you selected transient as the solution type, you can define how the model components move in relation to one another. This is accomplished by assigning a MotionSetup to a Band object. Two or more motion bands may be assigned, each with its own independent motion characteristics. Multiple motion bands are used primarily for certain types of motors where multiple rotors may rotate about a common central axis; however, other applications are possible as shown in the following examples.

Example - Two Bands of Motion

The project shown below comprises two rectangular magnets, each surrounded by a band object with a MotionSetup assigned to it. When one magnet moves, the other magnet realigns itself. Also note that the solution context display shows the position and speed for both motion setups.

Note: The two moving bands must not touch each other. There must be some stationary region between the two bands, even if it is filled only with vacuum.

Example - Multiple Bands of Motion

The magnet project shown below comprises five bar magnets. When the center magnet (MotionSetup1) moves, the other magnets also move.

Note: The moving bands may not touch each other. There must be some stationary region between the bands, even if it is filled only with vacuum.

Related Topics 

Assigning a Band of Motion

Showing and Hiding Motion Objects

Motion Variables Tab

Technical Notes: 3D Transient

Technical Notes: Meshing Aspects for 3D Transient Applications With Motion