[PSUBS-MAILIST] O2 tanks

[via Personal_Submersibles]

Most of the FEA packages associated with 3-d modeling software use a linear model.  You would need an FEA tool that can model buckling to study this.  An alternative is to use the ABS stress analysis spreadsheet with no stiffeners.  This would give a conserative crush depth.

Cliff


Cliff Redus

> On Jul 1, 2017, at 2:27 PM, Scott Waters via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> I am unsure of the depth rating of an empty scuba tank. It could be easily found out on a solidworks simulation.
> Thanks,
> Scott
> 
> 
> 
> Sent from my U.S. Cellular® Smartphone
> 
> -------- Original message --------
> From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
> Date: 7/1/17 12:34 PM (GMT-05:00)
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] O2 tanks
> 
> Thanks' Scott,Do you know what the max depth rating for an empty Scuba O2 tank is.  I suppose you could increase the rating by using only part of the volume and leave pressure inside them.  A sub could carry several in that case since they are close to neutral buoyant.  Hank 
> 
>     On Saturday, July 1, 2017 8:25 AM, Scott Waters via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Hank,Alvin has all the O2 supply internally. Pisces has the mission O2 internally and emergency supply externally in special steel cylinders that are pressure tested to 1.25 max depth while empty.Thanks,Scott Waters
> 
> 
> Sent from my U.S. Cellular® Smartphone
> -------- Original message --------From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> Date: 7/1/17 9:59 AM (GMT-05:00) To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> Su
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