Did you try to use Simulation Express Analysis Wizard to perform Simulation on your part models?
SOLIDWORKS Simulation Xpress is a basic simulation tool which allows you to run simple linear static analyses on single bodied parts. Simulation Xpress is included in SolidWorks Standard package.
In the attached video, we have gone through the steps to create boundary conditions and solve the problem for simple cantilever beam with a tensile force acting is 5000 N.
Later we have changed the Load value to 10,000 N and changed the material and rerun the study to see the results.
By using the above sample you can able to perform simple FEA calculations for your part models using Simulation Express Analysis Wizard.