Dassault Systems Universal 3D XML files (*.3dxml) may be be converted to 3D ACIS models (*.sat) with several CAD software or even dedicated CAD conversion programs like CrossManager. Generally, it would be best to check some Dassault Systems software like CATIA, because that works with 3DXML format by default.
Convert Dassault Systems Universal 3D XML document to 3D ACIS model file.
We found one software available in the database for this conversion.
Microsoft Windows software - convert 3dxml to sat on Windows
A CAD converter with huge format support
Convert from 3dxml file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.