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23-Emerald IV
September 26, 2013
Question

Curvature Continuous

  • September 26, 2013
  • 5 replies
  • 2441 views
Can someone help me understand why the output from 'Analysis - Geometry - Curvature' doesn't look "smooth" (tangent). The geometry is constructed from 3 splines and 3 radii with curvature continuous attachments between them. Thanks.

Tom U.

[cid:image005.jpg@01CEBA94.87281440]

[cid:image007.jpg@01CEBA94.87281440] [cid:image009.jpg@01CEBA94.87281440]

    5 replies

    TomU23-Emerald IVAuthor
    23-Emerald IV
    September 26, 2013
    After more reading it appears that I was looking for "G3" or "C3" continuity, which Pro/e can't do.

    1-Visitor
    September 27, 2013

    Tom,


    Just curious. What are you working on that requires G3? The only G3 work I have done is Automotive body design and as far as I know Mr. PTC has not been given the honor of creating stamped painted body panels anywhere in the world.


    What gives?

    1-Visitor
    December 23, 2013

    You're not using Pro-E's functionality whichproduces Curvature Continuous curves. I'm guessing you may have initially learned SolidWorks and you're expecting other CAD systems to be the same as you initially learned?

    1-Visitor
    December 26, 2013

    Hi Tom,


    Not sure how you are creating the curves, are they all sketched? are they all part of the same sketch? are they on the same plane? After all that, you may find you get a nicer surfacing curve by copying the curve (or curve segments) and pastingas a curve, during the paste operation, change from exact to approximate.


    I use this technique when surfacing to generate better surfaces. The curve you are generating using this method is called an approximate composite curve.


    Hope that was helpful


    Scott

    1-Visitor
    December 27, 2013
    That would probably be a good method. Make sure that you watch for tangency issues from curve to curve.



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