Modify Force Elements

Supported only in previous releases
Controls the conceptual suspension spring/damper force elements.
 
For the option:
Do the following:
Spring Property File
Specify the property file that contains the force-deflection relationship for the spring. See Property Files.
Spring Preload
Specify the desired preload for the spring.
Damper Property File
Specify the property file containing the force-velocity relationship for the damper.