About the 3D Contact User Interface
The 3D Contact tab consists of tabs, commands, and shortcut menus. A 3D contact is represented by 
on the Mechanism Model Tree. Click 3D Contacts to create or edit a 3D contact.
on the Mechanism Model Tree. Click 3D Contacts to create or edit a 3D contact.Commands
• References—Select contact references:
◦ Click in the Contact 1 box to select references for the first contact.
◦ Click in the Contact 2 box to select references for the second contact.
• Vertex Radius—When you select a vertex, type a radius value in the box.
• Under Friction, select an option from the list to define a 3D contact with friction or with no friction. When you define a 3D contact with friction, type a value for 
the coefficient of static friction, or 
the coefficient of kinetic friction.
the coefficient of static friction, or the coefficient of kinetic friction.Tabs
• References (open by default)—Displays the selected contact references, and the vertex radius if one contact reference is a vertex. The default vertex radius is 2.5% of the size of the part's bounding box.
◦ Full Geom—Specifies that the selected references are treated as complete geometric objects.
◦ Contact Reference 1—Displays the selected references for the first contact. Click 
to flip the contact surface side.
to flip the contact surface side.◦ Contact Reference 2—Displays the selected references for the second contact. Click to flip the contact surface side.
to flip the contact surface side.◦ Vertex Radius—When you select a vertex, type a radius value in the box.
• Contact—Displays the Side 1 Contact Properties and the Side 2 Contact Properties. Select an option from the list.
◦ Select material—Click More to select a material to use.
◦ Use values—Type values for Poisson's ratio, Young's modulus, and Damping.
• Properties—Displays the name of the 3D contact. Click 
to open feature information in the browser.
to open feature information in the browser.