[PSUBS-MAILIST] 1-ATM design

[Petar Topljak via Personal_Submersibles]

Hi everyone,

My name is Petar and I am coming from Rijeka, Croatia.  I am designing
1-ATM one man submersible as a project for one of my subjects at my
university.

The idea is to design a pressure hull that can safely whitstand pressure at
150 meters. Procedure is to design submersible according to ABS (or ASME or
any else classification company) rules, create model using 3d modelling
software and do a finite element analysis of the model.

The problems I ran into are in using the spreadsheet, as there are some
parameters that are not defined in the ABS rules, or I am not able to find
them or understand them due to my english skills, + we use metric system,
so changing creates additional problems.


I understand the classic questions asked about the lobes and coefficients
(eta), but i had issues with Tw, Lw Lf and tf parametres - "mail3
stiffener.png" am I doing it right ?

I am also sending you screenshots of my sheet, so you can check it if you
like and alert me for any possible mistakes.

Thank You in advance, Petar
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