Convergence Issue

- September 19, 2022 at 5:24 pm
  
  Durga Parajuli
  Subscriber
  
  I am modeling the Compressed Air Energy Storage (CAES) tank using ANSYS Workbench. The materials used are steel and Ultra High-Performance Concrete (UHPC). I am having convergence issues when non-linear concrete is used but for linear analysis, there are no errors.
  Thank you.
- September 22, 2022 at 11:13 am
  
  Ashish Khemka
  Ansys Employee
  
  Hi Durga,
  
  Can you please share snapshot of the solver output? In Mechanical generally when the default iteration value of 25 is exceeded then the solver exits the solution. If that is the case (you can check the cumulative iterations) then try increasing the iterations by using the command - NEQIT. For example - for specifying 100 iterations use NEQIT,100.
  
  Regards,
  Ashish Khemka
- September 23, 2022 at 8:26 pm
  
  Durga Parajuli
  Subscriber
  
  Hello,
  Thank you so much. I could not fix the problem. Here is the screenshot of the solver output.
- September 26, 2022 at 9:22 am
  
  Ashish Khemka
  Ansys Employee
  
  Hi Durga,
  
  Looking at the message it looks like analysis is continuing at your end using Sparse solver.
  
  Regards,
  Ashish Khemka

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