For Half Section model : Spring Preload should be Half or Full ?
When you say half section, do you mean cutting the spring into 2 halves (so 2 smaller springs)?
In that case, preload should stay the same but check the spring constant. It might increase.
I would suggest you to compare using springs in serial/parallel combinations to find this out.
Ansys customers with active commercial software licenses can access the customer portal and submit support questions. You will need your active account number to register.