Geometry Errors
The CAD geometry could not be imported, validated, or meshed. Why, and how to fix it.
If you only have 2 minutes
Almost every geometry error is a CAD problem you fix in your CAD system and re-export, not something to change in Dr.Q. Export closed, watertight solid bodies as STEP, and remove sketches, surfaces, and wireframe entities. Multiple solids are fine: for a contact simulation you keep the contacting parts as separate solids. See Import Geometry for the full preparation checklist.
Common errors
- Error 127: model validation found problems in the geometry (gaps or non-watertight surfaces, self-intersections, slivers, tiny features). Repair the geometry in your CAD system as a clean closed solid and re-export. The message reports how many issues were found.
- Errors 128, 130: the CAD import produced an empty model or failed outright. Export solid geometry as STEP, and check the file is not empty or corrupt.
- Error 296: the CAD file contains 1D or 2D entities (wireframes or surfaces) and cannot be meshed. FEM needs solid (3D) volumes; remove sketches and surface geometry and export closed solids.
How to prepare and export geometry, which formats are accepted, and how Dr.Q's automatic healing works is covered in Import Geometry.