ANSYS seems to curve fit biaxial stress-strain data very well up to 90% (and calculate representative coefficients for the Mooney Rivlin model).
Yet when I extract data from the equibiaxial region of my planar biaxial simulation, ANSYS estimates stresses not in line with the curve I used to...
Does anyone know the form of the equation that ANSYS uses to curve-fit biaxial stress-strain data for a 2-parameter Mooney-Rivlin model?
The regression is said to be linear and the help document seems only to discuss the strain energy density function.
In the special equibiaxial circumstance...
I'd like to define my own equation to be plotted as a colored contour on my model but cannot seem to find information online regarding the process for doing this.
Please advise.
Thanks
