FEM import DXF

FEM models for floors (slabs) can be imported as a DXF file. The data that can be imported are:

Geometry
Supports
Loads

To be able to import this data, the DXF file must be structured in the following way:

Geometry

The contour of the geometry can be imported via DXF.
Properties such as plate thickness, holes and materials must be added or modified manually.
Type of objects that are valid:
- closed polyline
All objects for the geometry must be on the same layer.
The name of the layer is free to choose.
In example below, all geometry objects are on layer FEM_geometry.

Supports

Supports can be imported via DXF.
Imported supports are deafult defined as Z-support. Modifications have to be done manual.
Type of objects that are valid:
- area support: closed polyline
- line support: line or polyline
- point support: node or point
All objects for the support must be on the same layer.
The name of the layer is free to choose.
In example below, all support objects are on layer FEM_supports.

Loads

The type and position of loads can be imported via DXF.
The default value of the loads is 1 kN. Modifications have to be made manual.
Type of objects that are valid:
- area load: closed polyline
- line load: line or polyline
- point load: node or point
All objects for the loads must be on the same layer.
The name of the layer is free to choose.
In example below, all load objects are on layer FEM_loads.

For a good mesh, it is important that objects do not have small mutual distances. The best is a distance of zero or a distance that is larger than the intended mesh size. Adjusting a FEM model for a better mesh can be done after importing. It is better to avoid any mesh problems during the creation of the DXF file.