Mesh Convergence

- March 17, 2021 at 10:46 pm
  
  annecowan
  Subscriber
  
  Hi,
  I am trying to create a hexagonal mesh on my model which is 1/4 of an aneurysm with a material filling the volume. I am only interested in the stresses that occur in the aneurysm, which will mostly occur in the lower section. I used a sweep mesh and increased the number of divisions and added sizing to the edges on the lower half. I'm trying to converge the mesh to 1% but so far I have been unsuccessful as the smallest differences between the max stress has been about 20,000Pa and it needs to be approx. 5000. Is there anything that I can change that may fix this?
  Thanks!
- March 19, 2021 at 9:03 am
  
  1shan
  Ansys Employee
  
  ,nThe tetrahedral mesh looks pretty coarse. Since both the meshes would affect the result you may want to refine the other one as well. You could also try adding a few elements across the thickness to see if that helps. I also see that the elements look distorted near the lower right corner, you might want to repair that.nnRegards,nIshan.n
- March 19, 2021 at 1:44 pm
  
  annecowan
  Subscriber
  
  Great, I will try these. Thanks for your help!n

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