help - surface creation

[ETAOIN SHRDLU]

Bye to all,

compared to the curves indicated in the annex, I would need if possible the reconstruction in alias of the surface

Can you do this for me, please? I need to see the parameterization of alias on these grade 6 curves on u and grade 4 on v


Thank you.
http://rapidshare.com/files/269554115/network.zip.html

 

[Fulvio Romano]

1) I imagine that the surface should have a tangency on the symmetry plane, trouble, because the projection of the curves on the tangent plane to the surface do not end orthogonal on the symmetry plane, but little stuff, perhaps because of the tolerances of the igs.

2) forcing a network on all curves is not possible (does not create the surface) then:
2.1) (top) by making an approximate network you get a maximum disconnection of 0.5mm. Moreover there is a residual error of tangence in the center of 0.3°
2.2) (bottom) ignoring the two internal sections, you get a perfect adherence to the edge curves, and a maximum deviation from the inner sections of 0.07mm. Moreover the tangence in the center is of type c2

If it were a paid job, I would then deliver the surface down.

Hi.

 

[ETAOIN SHRDLU]

1) I imagine that the surface should have a tangency on the symmetry plane, trouble, because the projection of the curves on the tangent plane to the surface do not end orthogonal on the symmetry plane, but little stuff, perhaps because of the tolerances of the igs.

2) forcing a network on all curves is not possible (does not create the surface) then:
2.1) (top) by making an approximate network you get a maximum disconnection of 0.5mm. Moreover there is a residual error of tangence in the center of 0.3°
2.2) (bottom) ignoring the two internal sections, you get a perfect adherence to the edge curves, and a maximum deviation from the inner sections of 0.07mm. Moreover the tangence in the center is of type c2

If it were a paid job, I would then deliver the surface down.

Hi.

Thank you very much, now I download the file and load it to see it

Thanks again

 

[ETAOIN SHRDLU]

Sorry, a question

in the creation of the surface, did you also include the internal curves or did you leave them?

It seems to me that you have only entered the external boundary

 

[Fulvio Romano]

the surface above considers all six curves (in fact it has two internal isoparametrics), that below, only four on board.