Our modelling group may be of help - we can model non-linear materials and large deformation using a variety of codes. For further info take a look at our web site at http://www.ceram.com/modelling.
Best regards.
Dear Falcon4
Have you considered a computational analysis to determine the design parameters. This may offer a more cost effective solution to physical prototyping. Let me know if this would be of interest - depending on your design needs it might prove a cheaper option in the long run.
Best...
