Polymer material definition using tensile test data (linear part Hyperelastic material model)
I am trying to define a Polymer material based on tensile test data. my main issue is the polymer enters the plastic zone after 70% strain.
I am using this polymer in an application that works only in the elastic zone of the material (entering the plastic zone for my application means failure).
I used Yeoh 3rd order (hyperelastic model) to define only the elastic part of the curve ( less than 70% strain) and my simulation ( using static analysis in ansys work bench) works well, is this right? if not I would appreciate it if you suggest the right method for defining the material.
I checked the forum and I understood that Hyperelastic materials should not be used with plastic materials.
I uploaded the tensile test figure for the polymer.