Re: battery boxes

[Rick Lucertini <empiricus@sprint.ca>]

VBra676539@aol.com wrote:

> Phil Nuytten wrote:
>
> > Hi, Jon:
> >         Re: slipping external rib/ring stiffeners over a cylinder to
> > increase the cylinder's depth capability: External rings MUST be attached
> > to the cylinder; then, as the cylinder tries to buckle under load, it has
> > to 'drag' the rings with it . . if the rings are not physically attached to
> > the cylinder, the cylinder doesn't know that they're there.
> >
> > Regards
> > Phil Nuytten
> >>
>
> But, doens't that mean that the rings don't work unitl the collapse starts?
> Vance

The rings would begin to work as the hull circumference decreased from the pressure - which,
hopefully, would be long before collapse.  No-ring collapse mode wouldn't even be approached as the
stiffeners on the with-ring hull would hold the hull back - as Phil says: dragged inward.

Rick




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