shell element nonlinear model error

- April 26, 2020 at 3:30 pm
  
  Kevin1993
  Subscriber
  
  Dear colleagues
  
  I need help to solving my shell element model, my model experiencing error and several warning. One of the warning is convergence problem.
  To solve this problem i try to refine the mesh, unfortunately even with 5 mm mesh size didn't solve the problem.
  
  Is there anything wrong with my model setup?
  Does solver type can affect this ? because right now i'm using "direct" solver, not iterative.
  
  My model is attached in this post.
  
  Your help will be much appreciated.
  
  Thank you
- April 26, 2020 at 6:03 pm
  
  peteroznewman
  Subscriber
  
  Are you using the free Student license that has node limits or the unlimited Research license?
- April 26, 2020 at 6:07 pm
  
  Kevin1993
  Subscriber
  
  I'm using unlimited research license.
- April 26, 2020 at 6:30 pm
  
  peteroznewman
  Subscriber
  
  Mesh everything with an element size of 25 mm. Smaller elements with a plasticity material model make it harder to converge.
  
  You can use a single step analysis with 30 mm of displacement.
  
  Use Initial and Minimum Substeps of 30 and it will solve to the end.
- April 26, 2020 at 6:35 pm
  
  Kevin1993
  Subscriber
  
  Thanks Peter, i will try and inform you the result.
- April 27, 2020 at 1:18 am
  
  Kevin1993
  Subscriber
  
  it worked, thanks Peter.