How to model different spring stiffness for loading and unloading in Creo Mechanism (MDO)

[SK_13639906]

In Creo Mechanism (MDO) motion simulation,
I would like to use different spring constants for the loading and unloading (return) directions, in order to represent spring hysteresis.

Is there any way to simulate this behavior in MDO?
If not directly supported, what is the recommended workaround?

[remy]

Hi 

just thinking out loud : did you try and use a parameter, relations and analysis ?

the stiffness could take a value depending on the direction.

the stiffness of the spring can be set a parameter

that parameter can be define by a relation

that relation could give different values to the stiffness 

now you need to find how to pick the direction 

maybe try with measures

my two scents