FEA as we know it today was already well established in the 1960s, while current CAD-technology was developed after 1970. While the focus of CAD is to make 3D models that are sufficiently accurate for production purposes, FEA needs compact geometric descriptions where unnecessary detail is removed to focus the analysis on essential properties of the objects.. Consequently CAD-models provide accurate descriptions of the outer and shells of objects, while FEA provides a 3-variate volumetric model with a crude outer shape description.
The above discrepancies make information exchange between CAD and FEA time consuming, complex and expensive.
Interoperability of CAD and FEA requires that the shape accuracy of CAD has to be reflected in the Finte Elements, while the water-tight connectivity of FEA has to be reflected in CAD. This will:
Published October 19, 2010