Embedded Pile with Error Code: 204

Question

Hi everyone, 
 I am trying to run 3D model but no success. In the first step, I'm using the Mohr-Coulomb model and the modulus young in soil parameter has large different parameters from 15k until 4 mil. And I gradually change it but still shows the same error (Picos solver: incorrect solution, slow convergence. [Error code:204]) 
 On the other hand, I'm trying to run a simple model with linear-elastic and using the modulus young from 35k-400k but a similar error. 
 Is there any suggestion or opinion about this problem? 
 
 Thank you

Stefanos Papavasileiou · Answer

Dear Ganjar, 
 As explained in our Reference manual in the appendix with errors, in finite element calculations it is not preferable to have differences in stiffness (or permeability) larger than 1E6. This would cause problems in solving the matrix and should be avoided. For very stiff structures you can always use the Rigid body feature. 
 However, the picos solver error may point to a different type of convergence error, which might be different. You can try to switch to Pardiso to see if it helps. 
 The fact that you get the same error with linear elastic points to the fact that the error is probably caused for a different reason rather than the stiffness value. I would recommend you checking the material parameters carefully. 
 If you still cannot find the problem, please submit a service request. 
 Then, one of our support engineers can help you in detail: https://apps.bentley.com/srmanager/ProductSupport