advanced surfacing: sweep tangent to a surface?
advanced surfacing: sweep tangent to a surface?
(OP)
Is it possible in UG to create a sweep tangent to a surface NOT at it's edge used as a guide, but tangent somewhere in the middle of surface?
Imagine a 3d curve and a deformed ball. sweep a line along the the curve tangent to the deformed ball.
I would imagine a variational sweep section element having a tangency constraint to a curve created by sectioning the surface.
Unfortunately, it seems only curves can be sectioning in such a way, thus providing with only points as reference.
Possibly, it's a limitation of UG engine.Then any workarounds, tricks, tips?
Thank you
Imagine a 3d curve and a deformed ball. sweep a line along the the curve tangent to the deformed ball.
I would imagine a variational sweep section element having a tangency constraint to a curve created by sectioning the surface.
Unfortunately, it seems only curves can be sectioning in such a way, thus providing with only points as reference.
Possibly, it's a limitation of UG engine.Then any workarounds, tricks, tips?
Thank you





RE: advanced surfacing: sweep tangent to a surface?
An example file is worth a thousand words.
RE: advanced surfacing: sweep tangent to a surface?
here is very generic picture of the conept.
http://fi
magenta guide of would-be "supersweep".
dark blue - section to be swept - is made of couple elements and is tangent to green surface. (I had to make a section (red) separately)
The real surface although distanly similar is not a body of revolution.
I see that what I want is essentially a floating guide, which is conceptually more complex then fixed guides that UG can deal with.
My be someone with surfacing experience can recommend workarounds, if UG enginge is incapable.
All I can think of is creating a bunch of sketches and throw a through curve mesh.
Anything better?
RE: advanced surfacing: sweep tangent to a surface?
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.com/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: advanced surfacing: sweep tangent to a surface?
but if needed can borrow NX8 licence from Siemens.
Thank you
RE: advanced surfacing: sweep tangent to a surface?
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.com/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: advanced surfacing: sweep tangent to a surface?
RE: advanced surfacing: sweep tangent to a surface?
John, cowski,
I greatly appreciate your invlovement.
the attached part is very generic. The farm is strict :)
RE: advanced surfacing: sweep tangent to a surface?
Anyway, I decided to try one of these schemes found at...
Insert -> Mesh Surface -> Sections -> Section Fillet-Bridge...
The only assumption that I made was assuming the plane of tangency was the parallel to the plane of the your guide curve (Cyan Arc), so I created (Brown) Section Curve where your so-called section curve was tangent to the surface. Now since this surface function is a 'fillet' I needed a seconf surface so I created the extruded body (Brown) using the your guide curve as the profile. I then proceeded to create the Section Fillet-Bridge surface (Copper colored) using Tangent constraints. Now as you see it (see attached part), your 'section' curve (Blue) was NOT used at all as I depended on the two surfaces to provide the continuity. However, there is an option to use the shape a curve as a sort of 'template' to define what the shape of the surface is to be. To see how that would work (which BTW will give you, at least for the assumptions I made, the closet to what I think you want, at least mathematically, although I'll admit it's not going to be what you expected, trust me) double-click edit the Section surface (Copper colored) and when the dialog comes up, in the section of the dialog titled 'Section Control', change the Section Method from 'Continuity' to 'Inherit Shape' and then select your Section curve (Blue) and hit OK. Now I alluded to the fact that this is not exactly what I think you expected, but mathematically it meets all the criteria.
Anyway, play with this and some of the other Section surface schemes to see there might be something there that might help you get what you're looking for.
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.com/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: advanced surfacing: sweep tangent to a surface?
Thank you! Will study your solution tomorrow thoroughly.
RE: advanced surfacing: sweep tangent to a surface?
thank you!
section surfaces are definitely worth looking deeper into.
However, my intent was something like this:
ht
ht
unfortunately even in this simple case curve on surface gets out of tolerance easily, and an ugly surface is produced.
so the assumption about tangent edge is too strong. In this case I would use variational sweep since the second guide is defined.
RE: advanced surfacing: sweep tangent to a surface?
RE: advanced surfacing: sweep tangent to a surface?