Hello.

Hope that you can help me with this matter.

I need to do a static analyze where loads and restraints are added in sequence. First I have one smaller load and some "on flat surface" restraints. This will cause the part to deform a little bit. After this I add new restraint and new higher loads in new locations to see the final deformation and stress. How can I do this in SW simulation? The real case is on a fixture where clamping and hydraulic supports are added in sequence minimize deformation.

Thank you in advance.

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.