This example problem demonstrates the curve-fitting capabilities used to select an appropriate hyperelastic constitutive model in the Ansys Mechanical Application (see also Experimental Data in the Material Reference). To see this example solved using Ansys Mechanical APDL see Calibrating and Validating a Hyperelastic Constitutive Model in the Technology Showcase: Example Problems.

Several issues that influence the accuracy of the curve fit are discussed. Validation of the resulting constitutive model is demonstrated by comparison with a tension-torsion experiment.

Overview