The solver engine was unable to converge on a solution for the nonlinear problem

- September 18, 2023 at 2:35 pm
  
  akshay akshaykulkarniak12
  Subscriber
  
  Hello, I am currently engaged in simulating a Full- section of a mechanical system involving a press-fit pin and a PCB using the ANSYS Static Structural Solver. After getting some warnings, i am getting error "The solver engine was unable to converge on a solution for the nonlinear problem". can you please help me with this?
  
  The link for archive folder is https://drive.google.com/drive/folders/1_0kt8mwfO2vt0Zlcg7CoNzGdxGiJQIFn?usp=drive_link
- September 20, 2023 at 1:49 pm
  
  Dave Looman
  Ansys Employee
  
  If you are attempting to analyze the actual insertion of the pin, that is always difficult due to the stick slip behavior of the contact. It's much easier to model the pin geometry already in position and resolve the interference with contact.
  - September 21, 2023 at 11:31 am
    
    akshay akshaykulkarniak12
    Subscriber
    
    Hey Dave, thanks for the help. But I want to plot graph between Force vs Displacement, as shown in the picture
- September 21, 2023 at 4:10 pm
  
  Dave Looman
  Ansys Employee
  
  Oh, OK. I was just hoping you didn't need to analyze the insertion process. Generic recommendations to resolve convergence problems with frictional contact are to reduce the contact stiffness, use the unsymmetric solver and insert the pin with a displacement, not a force.

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