Mesh Errors
Why mesh generation fails and how to fix the geometry.
If you only have 2 minutes
Mesh failures are almost always caused by geometry problems. Simplify the geometry in your CAD system and re-export.
Typical geometry problems
- Very small features (holes, chamfers smaller than the mesh size)
- Open or degenerate surfaces
- Overlapping or interpenetrating bodies
- Extremely thin walls
Workarounds
- Simplify the geometry in your CAD system (remove small features)
- Adjust mesh size (larger elements for problematic areas)
- Export as STEP AP214 (don't use IGES or STL)
Most mesh problems are solved by geometry simplification. Remove everything that isn't relevant to the analysis — small fillets, chamfers, threaded holes, logo engravings.
Checking geometry before meshing
After importing, inspect the geometry in the viewer:
- Look for gaps, holes, or stray surfaces
- Check that all bodies are closed solid volumes (no open shells)
- Verify there are no overlapping bodies in assembly imports
If the geometry has defects that Dr.Q's automatic healing can't fix, you'll need to repair them in your CAD system before re-exporting.