I hope you can help me on this. I need to carry a non-linear analysis on a part of rubber material. For that we need to have the poisson ratio value of the material. As the rubber material given in the material library of SolidWorks doesn't have the poisson ratio defined in it. I added a custom material by copying the available material to custom material library and gave the poisson ratio value to it. Now while saving the custom material it asks for the valid stress-strain curve and I don't know how can I get the stress-strain curve. Kindly guide me with this. The material I need Is Neoprene rubber.