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RE: [PSUBS-MAILIST] Sphere
This version is still available at the flowing link
http://www.deepsea.com/downloads.html#
Rgds AndyH
-----Original Message-----
From: david cutajar [mailto:davecutajar@djcengineering.com]
Sent: 30 March 2006 04:24
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Sphere
thanks alot. Actually I do have that program (it is a
shareware version 3.01). It runs in a DOS window. I
completely forgot it.
I wonder if I can post the version I have.
-David Cutajar
--- Karl Stanley <karl@stanleysubmarines.com> wrote:
>
>
> I'd like to know a good source for spheres also. And
> other than FEMA on a cad system (Solidworks etc.) I
> am
> unsure how to acurately predict failure.
>
> On a sphere, because of it's simple shape, I would
> think that the falure calculation should be somewhat
> simple. That is, without bulkheads probably.
>
> -David
>
> Deep sea power and light offers a program called
> under pressure- I
> believe it's about $200- it is VERY easy to use and
> caculates the crush
> depths for any pressure vessel of any material as
> long as it is
> cylindrical or spherical. The only downside is it
> is designed for
> makers of small pressure vessels- ie- things that
> are being machined
> absolutely perfect- so- when you're talking about
> spheres big enough to
> get into- unless you are funded with tax dollars you
> are not going to be
> able to afford to machine something that large -
> especially spherical-
> Other than that- I suggest looking thru the Busby
> book carefully-
> there are at least a dozen specs given on spherical
> hulls- thickness,
> material and diameter- and you can extrapolate from
> that- it's perfectly
> scalable- that's why models work- almost all subs
> are either 516- grade
> 70 or Hy-100- so- your'e material variable is fairly
> fixed- for
> reference 516-70 is roughly half as strong as the
> Hy-100- hope that
> helps- Karl
>
>
>
>
>
>
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