Mr. Antonios Plagianos 0 Report post Posted January 20, 2018 helloi imported an iges file and some of the hull surfaces are fbrephow can i transform them to fnurbs? Share this post Link to post Share on other sites
Stefan Wunderlich 6 Report post Posted January 22, 2018 Hi Antonios, Breps are basically a set of trimmed surfaces that are stitched together. These cannot easily be transformed to nurbssurfaces.Think of a surface with some holes - there is typically not a single nurbs representation for this type of geometry. Cheers,Stefan Share this post Link to post Share on other sites
Mr. Orcun Kozaka 0 Report post Posted January 23, 2018 Hi, I would like to expand on this question. I am trying to do a propeller analysis and I have a single nurbs solid of the blade geometry splitted through the leading edge of the blade. (exported as IGES from AutoDESK inventor platform)If I understood correctly, the tutorial video showed that we have to import two surfaces, front and back (i.e. low pressure, high pressure respectively). Well my problem is that when I try to convert the splitted parts to nurbs surfaces it only creates a joined single surface of the blade, meaning that I am losing the splitting information. Just out of curiosity I went ahead and tried to do a blade analysis with what I have but to no success. My question is: Is there a way to split a single nurbs surface into two inside the CAESES? Or do I have to use another platform other than the Inventor to export my blade geometry? Thanks in advance. Orçun Share this post Link to post Share on other sites
Jörg 29 Report post Posted January 24, 2018 Hi Orçun, You can extract the NURBS information, see the attached picture . If your underlying surfaces are somehow identical to the actual blade (and not strongly trimmed etc), you can then use e.g. image surfaces (change domain intervals) to separate them in CAESES. CheersJoerg Share this post Link to post Share on other sites