What you describe seems like you need to analyze stress and strain over time, that will require a dynamic analysis. Try your hands at a Linear Dynamic study first and see if it suits your needs.
I'm not familiar with the SW Simulation interface, but I have the impression from reading other threads that it is similar to the ANSYS Workbench interface when it comes to applying loads and restraints. The bad news is that you can't make restraints come and go like you can loads and displacements. So I have had to simulate restraints with added parts with variable loads or displacements. Then you can do a mult-step "static" analysis where you apply some of your simulated restraints, then some others, until you have added them all.
To do a multi sequence analysis you need the sim premium product. Restraints can not be "relaxed", though they can be brought back to zero. If relaxation is really required you would have to simulate the restraint with a force which can be brought back to zero and then essentially be removed. Or, as previuosly noted, otherwise reformulate the problem some how.
If the displacements are small and linear assumption is valid then you can do it all at once and get to the same place. If the need for the sequence is driven by fastening then you can use the bolt connectors or shrink fit contact to have the program automatically do the sequence in a linear static analysis.
Hi all and thank you for your answers.
Unfortunately I don't have the premium product, so the only solution left is to apply all loads and restraints at once. The displacements are small and linear assumption is valid so the results are probably accurate enough.