GiD forum

Hi, I've a concrete block with rebars inside and I want to modelling it with SAFIR that unfortunately doesn't support tetrahedral elements, I tried with much simpler problem and I've got a problem with mesh because GiD said me that I can't mesh in other type of elements than tetrahedrals.
How can I mesh a simple block with inside a rebar with other elements?

Thanks

Hexahedra meshes are very limitated for a generic shape.
You must split, if possible, your volume in several volumes all with 6 sides and then mesh structured
(or split in extruded volumes and then mesh semi-structured, this is a little more free than fully structured)

Note: to create your shape in structured blocks you can must do something like this:

Ok with simple problem it's easy to split in different 6 side volume, but if I want mesh this problem how can I do?

With complex models split it in six-sided blocks could be not possible or very hard to be done.
This is the main reason to use unstructured tetrahedra, it is a much more versatile element to fit a generic shape
(and the same about unstructured triangles in surfaces vs structured quadrilaterals)