ICEM Meshing Error: "Too Many Nested Evaluations (Infinite Loop?)"

This error message in ICEM, encountered while linking block edges to a geometric curve, indicates a potential issue with the way you're defining the link. Here are some possible causes and solutions:

Causes:

• Circular Dependency: The linking process might be creating a circular dependency between the edges and the curve. This could happen if the definition of the link relies on information derived from the linked entities themselves.
• Incorrect Selection: You might be inadvertently selecting multiple edges or curves during the linking process, creating a loop.
• Software Bug (Less Likely): While less common, there's a slight chance this error could be caused by a bug in the specific version of ICEM you're using (Ansys 2019 R1).

Solutions:

• Simplify Linking Logic: Review how you're defining the link. Avoid relying on information from the linked entities within the link definition.
• Double-check Selection: Ensure you're only selecting the intended edge and curve during the linking process.
• Check for Over-Constraints: Make sure the linking doesn't create any over-constraints on the geometry. The linked entities should have the necessary degrees of freedom to maintain a valid mesh.
• Try Alternative Linking Methods: Explore alternative ICEM linking methods like "Match" or "Project" to achieve the desired connectivity.
• Consult Documentation and Forums: Refer to the ICEM documentation or online forums for specific examples and troubleshooting steps related to linking edges and curves.
• Consider Upgrading (if applicable): If you suspect a software bug, consider upgrading to a newer version of ICEM if feasible. Newer versions often contain bug fixes and improvements.

Additional Tips:

• Save Often: Save your work frequently to avoid losing progress if you encounter the error again.
• Isolate the Issue: Try simplifying your geometry or linking a single edge-curve pair to isolate the specific cause of the error.

By following these steps and carefully reviewing your linking process, you should be able to resolve the "too many nested evaluations" error and successfully generate a mesh for your air-levitation platform project in ICEM.