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Nonlinear solver did not converge. Laser Heating of 3D Model
Posted 10.09.2019, 16:02 GMT-4 Heat Transfer & Phase Change, Materials, Mesh Version 5.4 0 Replies
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Good afternoon everyone, hope you can help me with my issue.
I am trying to determine the maximum temperatures at the surface of a simple rectangular 3D model where the top portion of the model represents the powder bed of an SLM process. The material properties of the powder bed, the bulk material below, and the base plate on the bottom (density, Cp, conductivity) are temperature dependant. The laser is represented with a 2D Gaussian Distribution heat flux as a function of laser power.
The error I get is as follows:
Nonlinear solver did not converge. Divergence of the linear iterations. There was an error message from the linear solver. Very ill-conditioned preconditioner. Time : 1.2683301879645671e-05 Last time step is not converged.
Laser diameter is 80 microns, to verify if something else was wrong, I tried with 800 microns, and it converged. Any suggestions for my issue?
Thanks in advance.
Hello Alejandro Arias
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