RE: Calculation request

["Alec Smyth" <asmyth@hsomail.com>]

Pat,

I made a spreadsheet which is downloadable from the PSUBS site in the
section "Design Guidelines and Tools". However, please take the results with
a high degree of scepticism (note warning on the page). As you can see from
the discrepancies we are encountering, the spreadsheet may or may not be
correct. The spreadsheet is strictly for reinforced cylinders with
hemispherical end caps, although the endcaps are assumed stronger than the
cylinder (which of course is not necessarily true, but should be if the
shell thicknesses are the same).

I don't know what tables Carsten is using. There are however tables in the
Pressure Vessel Handbook, which I want to use as a double-check. I'll get
back to the group with my results.

In the meantime, can anyone translate Carten's European steel "St 37 with
370 N/mm2 with a nominal K = 210 Nmm2" to US conventions and units? THANKS.

Alec Smyth



-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org]On Behalf Of Captain Nemo
Sent: Thursday, December 09, 1999 8:49 PM
To: personal_submersibles@psubs.org
Subject: Re: Calculation request


Will someone please tell me where I can acquire the tables / programs /
spreadsheets being used here to compute structural crush depth?

Also: are these programs limited to use with cylinders; or will they work
with compound-curved structures: sphere / hemispherical, torroidal,
lenticular, etc.

Thanks in advance.

Very best regards,

Pat Regan
vulcania@interpac.net