OK, that being the case, I should use the circumference of
c=PI*(id+((.44*thk)*2)). If your theory is correct, this should give me no
overlap. Is this what you are getting at?
--
Cory McConnell
BJ pipeline Inspection
"Richard Hinterhoeller" wrote in message
news:3DF4DD63.6000107@hfx.eastlink.ca...
> Cory:
>
> Near as I can tell, the kFactor out from the inner surface.
>
> For example, with the default kFactor of 0.44, the neutral axis is 44%
> of the thickness out from the inner radius of the bend. Material to the
> inside of this is compressed and material to the outside is stretched.
>
> Richard
>
> Cory McConnell wrote:
> > That is what I was wondering. Where does Inventor stretch the material.
On
> > the face where the fold line is, the opposite face, or between the 2
faces,
> > or some arbitrary location?
> >
> > --
> > Cory McConnell
> > BJ pipeline Inspection
> > "Kent Keller" wrote in message
> > news:E72CD79F5E939169600F92B095D0F3DA@in.WebX.maYIadrTaRb...
> >
> >>I would guess it has to do with the kfactor. Sheetmetal stretches when
> >
> > bent, and Inventor
> >
> >>takes that into account using either a kfactor or a bend table.
> >>
> >>--
> >>Kent
> >>Member of the Autodesk Discussion Forum Moderator Program
> >>
> >>
> >>"Cory McConnell" wrote in message
> >>news:AF50711E9AD188EB431937E861EAA493@in.WebX.maYIadrTaRb...
> >>
> >>>I have been fooling around with some sheetmetal stuff. I have been
> >>
> > trying
> >
> >>>to make a ring with holes in it. I want to start with a flat piece,
> >>
> > drill
> >
> >>>the holes, and then roll it into a ring of known diameter. I have
> >>
> > succeeded
> >
> >>>in doing this, but not without some small defects. See CF. The holes
> >>>partially fill in when the plate is rolled.(not a biggie). I have used
> >>
> > the
> >
> >>>circumference to determine the length of the plate. When the plate is
> >>>rolled it overlaps - but I have the right diameter. Can anybody
suggest
> >>
> > why
> >
> >>>I am seeing this?
> >>>
> >>>--
> >>>Cory McConnell
> >>>BJ pipeline Inspection
> >>>
> >>>
> >>
> >>
> >
> >
>