Mechanism Design and Mechanism Dynamics > Mechanism Design > Creating Mechanism Models > Cams > About Cam-Follower Connections with Liftoff
  
About Cam-Follower Connections with Liftoff
You can specify whether the two bodies in your cam-follower connection remain in contact during a dragging operation or a motion run.
If you select Enable liftoff on the Cam-Follower Connection Definition dialog box, the two cams are allowed to separate and collide during a dragging operation or an analysis run. The cams do not interpenetrate if they collide.
If you enable liftoff, you can also define a coefficient of restitution for your cam-follower connection. This value determines the energy loss due to the impact when cams collide after separating.
If you do not select Enable liftoff, the two cams remain in contact.