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afreyberger1-Visitor
1-Visitor
July 1, 2016
Question

Thin-walled hyper-elastic cyclinder analysis not converging

  • July 1, 2016
  • 1 reply
  • 1156 views

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!


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1 reply

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afreyberger1-VisitorAuthor
1-Visitor
July 5, 2016

As of now, I have only been able to achieve results up to 0.2 psi. I used a load condition of 1 psi, and I used 20 steps for the load factor at 0.01 increments (from 0.01-0.20). If I go any higher for the load factor, my analysis does not converge.

Ultimately, the goal is to achieve 800% strain at 4 psi for my result.

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