Trivial Solution

[Anonymous]

At the moment I am performing a mesh convergence study for specific areas in a model. It works fine, until I get to a point of refinement, where the solver produces an error:

Warning: AMG solver might encounter difficulty (tolerance=0.10E-05)
        Please inspect model for stability or try direct solvers.

 Warning: Found trivial solution (|X| <= 1.0E-38).
        Missing all loads?
 **** End AMG Iterative Solver Solution

Basically, the only thing I do is to increase the refinement. I have a mesh of 80 and a refinement factor of 5 is no problem. Everything finer produces the error. What could be a reason for this??

I am sure that the loads are connected to the model and the boundary conditions do exist as they do in the coarser versions of the mesh.

[Anonymous · Accepted solution]

After a day of receiving error messages I finally found a solution by using Microholes.

In addition to the error message described above the solver also indicated a warning that said a zero jacobian element was found. At first I did not see a connection, but obviously there was one. However with microholes it eventually worked.