We hold Simulation "Premium" courses quarterly. This particular course is two days and covers nonlinear static behavior such as: what happens when your model starts to yield? How far can you continue to yield the material until it rips open? Another nonlinearity deals with rubber gaskets and sealing issues. How do you know for sure the O-ring will deform or squish correctly and fill-in all the gaps? You can conduct a cross-sectional view in the SolidWorks Simulation, and determine the forces required to make that seal work correctly.
We have a PDF brochure at: http://www.texaseng.com/trainingdesc.cfm.
Click on "SolidWorks Simulation Premium -Nonlinear". Thanks for reading and have a great week! Anthony Botting