[PSUBS-MAILIST] 1-ATM design

[Petar Topljak via Personal_Submersibles]

Hi Alec,

As I understanded that, the D cell is there for another section of
different diametre, my design has only one D0 - 1800 mm .
I also have issues with ABS rules as they are made according to imperial
system, It would be desirable to have the calculations in my assignment in
metric system.

Thank You for quick response; Petar

2016-08-20 13:56 GMT+02:00 Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org>:

> Hi Peter,
>
> Welcome, and I wish I'd had that assignment in college! The blue cells are
> calculated, but for that to happen you need to populate the white ones. For
> example on your first screen shot, the material properties in column D have
> not been entered.
>
>
> Best,
>
> Alec
>
> On Sat, Aug 20, 2016 at 6:16 AM, Petar Topljak via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> 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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>>
>>
>
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