To Set Motion Axis Dynamic Properties
1. Open an assembly.
2. Insert a new component, or select a component and right-click in the Model Tree or graphics window and choose 
from the shortcut menu. The Component Placement tab opens.
from the shortcut menu. The Component Placement tab opens.3. Open the Placement tab.
4. Select an existing motion axis or define a new one. The Select component zero reference and Select assembly zero reference collectors below the motion axis activate and the motion settings options appear in the Properties area.
5. Select zero references.
6. Set motion settings.
7. Set the regeneration value.
8. Click Dynamic properties. Click the Coefficient of Restitution check box, 
and type a value in the box.
and type a value in the box.9. Click or clear the Enable Friction check box to enable or disable friction.
10. Enter values for:
◦ Static Coefficient of Friction 
—The friction force that prevents the surfaces of the connection from moving against each other until motion begins. Values allowed: between one and zero.
—The friction force that prevents the surfaces of the connection from moving against each other until motion begins. Values allowed: between one and zero.◦ Kinetic Coefficient of Friction 
—The friction force that prevents the joint surfaces from moving freely against each other, slowing the motion. Values allowed: between one and zero.
—The friction force that prevents the joint surfaces from moving freely against each other, slowing the motion. Values allowed: between one and zero.◦ Contact Radius (Rotational axes) 
—The distance between the motion axis and the point of contact. The value should be greater than zero.
—The distance between the motion axis and the point of contact. The value should be greater than zero.For more information, search the Help Center.