Thin-walled hyper-elastic cyclinder analysis not converging

Hey everybody,

I've been trying to run a static simulation where a thin-walled, cylindrical, hyper-elastic balloon is subjected to a pressure of 4 psi, but it keeps failing due to "the study did not converge for time: X.XX."

I am using: - Thin-wall AutoGEM control to ensure wedge elements

                 - ten-steps for the pressure function

                 - a relatively small element size (1 mm)

Has anybody had similar issues with hyperelastic materials? I attached the creo file. Thank you!