As an FEA analyst, you are likely losing too much of your time in CAD repair.
If you are an experienced FEA analyst, you must have come across following types of situations often while meshing your models:
“I create 3D geometries in CAD uniting together several surfaces so that the CAD modeler itself sees one unique surface; however, whenever I export it as a .sat, .stp or even binary file for Parasolid and then import it into the FEA pre-processor, I again see all those surfaces that are not supposed to be there.”
“For some parts I am extruding surfaces to solids, and for some parts I am building solids out of intersecting surfaces. All in all, it is a kind of a box structure with a hole on one side. I started importing it to GUI part by part, and as soon as I have top and bottom plate and two sides, the meshing fails. How did you exactly resolve this meshing problem?”
The FEA user community knows that most of the user interfaces available for finite element analysis are good for FE modeling only – they are not expert CAD modelers. It often happens that the CAD model created is not free from defects from a meshing perspective. The most common problems are duplicate edges, gaps, silver surfaces, unnecessary patches, etc. The problem is often more severe if a CAD model is first translated to a neutral format such as .sat, .iges, .step files before being imported into the FEA pre-processor; the defects are generated during the translation. In many other cases, the repairs made in the CAD model are not propagated into FEA modeler. The only option left is to repair the geometry in the FEA model itself, but the repair tools required often don’t exist in these user interfaces.
One-click model transfer from CAD to FEA without any neutral file format
For Abaqus users, there is great news: the Abaqus CAE pre-processor now has associative interfaces for CATIA, ProE and SOLIDWORKS.
The CATIA V5 Associative Interface allows you to transfer CATIA V5 Parts and Products into Abaqus/CAE using associative import. Materials and publications assigned to the CATIA V5 model are also transferred to the Abaqus/CAE model as material and set definitions respectively. In addition to associative import, the CATIA V5 Associative Interface allows you to directly import the geometry of CATIA V5 models in .CATPart and .CATProduct format into Abaqus/CAE without any intermediate neutral files. The following options are available with CATIA V5 associative interface: […]