Is it possible to analyze the stress in an assembly in SolidWorks?
For example, is there any way to convert the assembly into .igs and the importing it and running the sumilation icon?
There are several answers to your question. If you are running SolidWorks Simulation, not SimulationXpress, then you can run analyses on assemblies. If you are just running SimulationXpress, then you can Save As a part, using the option to keep all of the parts. (No need to export to IGES.) SimulationXpress is very limited in the types of analyses you can run.
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