About the Slip Component for Cam-Follower Connections
Use the slip component of the cam-follower reaction measure with a force balance analysis to determine whether the tangential force on a locked cam-follower connection is sufficient to make the connection move, or "slip." The connection slips when the following condition is met:
Tangential Force > Static Friction Coefficient x Normal Force
The tangential force is the resultant of any components of the applied loads that are tangent to the cam-follower connection at the point of contact between the two cams. The normal force is the resultant of any components of the applied loads that are perpendicular to the cam curves at the point of contact. Applied loads can include force motors, springs, dampers, forces, torques, and gravity.
Before creating this measure you must:
• Assign a static friction coefficient to your cam-follower connection. To assign a static friction coefficient, you must enable liftoff for your cam. Be aware, however, that during the force balance analysis, the cam is not allowed to lift off.
• Define a force balance analysis with a cam-follower connection lock. You must check the Enable all friction box on the External loads tab of the Analysis Definition dialog box. Otherwise, the software ignores the static friction coefficient and slippage always occurs.
• Run the analysis, (or restore a saved analysis).
When you select a cam slip measure and a result set on the Measure Results dialog box, the Value column indicates whether slippage occurred. If slippage occurred during the force balance analysis, the value of the measure is 1. If no slip occurred, the value is 0.