Iso-surface movement during SLM simulation in ANSYS can be caused by several factors. Here are some potential causes and solutions to consider:
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* Inaccurate Melt Pool Dynamics: The melting behavior of the powder might be misrepresented in your simulation. Calibrate your material properties, laser power settings, and melt pool viscosity to better reflect reality.
* Meshing Issues: A coarse mesh might not capture the melt pool dynamics accurately. Refine your mesh, particularly around the laser-powder interaction zone, to improve precision.