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Pressure vessle geometry

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Pressure vessle geometry

Unread postAuthor: metalmeltr » Tue Mar 08, 2011 5:54 pm

Could this serve as a viable pressure vessle? If it were to be used it would have tobe custom fabricated. Would the flat sides drastically reduce the strength as a pressure bearing vessle?

Ok sorry computer problems pics comming soon

Edit: picture is up
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Unread postAuthor: mark.f » Tue Mar 08, 2011 6:19 pm

I guess the question here would be: why?
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Unread postAuthor: metalmeltr » Tue Mar 08, 2011 6:28 pm

No reason what so ever, it came across my mind the other day though. This is the Theories/Accessories Database.
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Unread postAuthor: toogers » Tue Mar 08, 2011 7:47 pm

i bet it would work if it held pressure. :roll:

on a serious note, what would this be constructed of?
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Unread postAuthor: ramses » Tue Mar 08, 2011 7:48 pm

the flat sides would bow out almost immediately. It's no mistake that almost all commercial pressures vessels are cylindrical with spherical ends.
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Unread postAuthor: Moonbogg » Tue Mar 08, 2011 7:50 pm

It just depends on how strong the design is VS the pressure being used. Any shape will work if its strong enough. If you didn't have the flat sides it would be stronger of course.
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Unread postAuthor: saefroch » Tue Mar 08, 2011 7:52 pm

And inefficient design for a pressure vessel for sure, because there will be a lot of stress on the straight sides. The flat sides would probably balloon out and tear.

It's almost like a really short stubby pipe with two end caps, but the connections aren't threaded, and the insides of the end caps are flat.
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Unread postAuthor: metalmeltr » Tue Mar 08, 2011 7:53 pm

I was thinking about steel construction primarily, compostite fibers have also come to mind.
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Unread postAuthor: Fnord » Sat Mar 12, 2011 3:31 pm

You'll need to add a support joining the two flat walls in the center, such as a simple rod or tube, then it should work fairly well. If you continue to refine the shape based on that principle, you'll have an inner tube or donut. You could wrap a small inner tube in a fiber composite and have a pressure vessel ready in a few hours at little cost.
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Unread postAuthor: Labtecpower » Sat Mar 12, 2011 3:49 pm

Image

I believe this is a good geometry for a pressure vessel. It's shaped according to a DIN/ISO/EN-rule thingy. I picked it up when drawing a petrochemical installation in AutoCAD. (these things are practical to keep in mind :roll:)
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