[GiDlist] Generating "structured" volumes and hexahedral mes

[Timo Hambürger]

Hi there,

i try to build an arbitrary shaped volume, and then to generate a hexahedron
mesh within. But if i build e.g. the gear from the tutorial, and then assign
hexahedron elements to the resulting volume, GiD throws an error when i try
to generate the hexahedron mesh as follows:
Non-Structured volumes can only be tetrahedra or only points.

How can i define the volume as a structured volume? Where is the difference
between structured and unstructured? I did not found anything about
structured volumes at the help-file.

Best regards from germany,
Timo Hambürger