Contact Tab

Use Materials	If selected, the properties are obtained from the materials database. If not selected, enter the values directly.
Material 1	Specifies the material for the first part to which the object is attached.
Material 2	Specifies the material for the second part to which the object is attached.
Stiffness	Edits the stiffness of the boundary interaction between the two parts. It should be set to a number that approximates the material stiffness of the two parts in collision.
Exponent	Edits the exponent of the force deformation characteristic. The collision is modeled using an exponential force function.
Max Damping	Edits the maximum damping coefficient of the boundary interaction.
Penetration	Edits the boundary penetration distance where full damping occurs.
Design	If selected, the length of the spring at the start of the simulation is used as the free length. If not selected, enter the spring free length.
Length	Edits the distance. When the distance between the points on the two components is equal to this parameter, impact occurs.
Revert	Causes the entity to revert to the state after the last change or at the start of the edit.

$image\ebx_-1624375075.gif$ Pin - When the pin is in, selecting Apply does not close the dialog box, except when the edited entity is a joint derived from a mate. When the pin is out, the dialog box closes when you select Apply.