Global shaping by curve when near-sharp angle is involved

[PrintScaffold]

Hello everyone!
I found that global shaping by curve does not produce the exact shape when control curve has small radius or sharp corner. You can see what I mean on the picture and in the included prt file.
So the question is - is this an absolute design limitation of a tool, or is it possible to 'bend' the shape sharply?

www.cadroad.com

 

[JohnRBaker]

I suspect that there will never be sharp corners in the resulting shape and that it's by design. The term 'Shaping' implies that the result will have smooth transitions.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
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To an Engineer, the glass is twice as big as it needs to be.

 

[PrintScaffold]

I suspect so too. Meanwhile I have found a curious workaround. I didn't test it thoroughly yet, but at least in some cases we can mend the bent section with the Replace Face tool - see the model.

Now another question - is it possible to unbend this curved shape into a straight one using Global Shaping? I could not get it work, perhaps it is pushing this tool one step too far. But what if you know something I don't?

www.cadroad.com

 

[Toost]

If i have understood the global shaping correct, ( I only have experience in deform by surface) it's based on transformations of the Nurbs pole structures, and if I would like to have a small curvature, I guess that it would be beneficial to have dense pole structures. - small deviations between the corresponding poles.

In the supplied example the planar faces becomes Nurbs faces in the deformation.


Regards,
Tomas