Recent Advances In Submarine Pressure Hull Design.
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- The video shows the collapse modes of a submarine pressure hull, together with the shapes of different pressure hulls, designed to resist the unwanted implosions of submarine pressure hulls, caused by the effects of external hydrostatic pressure. The hull forms include corrugated and tube-stiffened pressure hulls, which were compared with the conventional ring-stiffened pressure hulls. The video also considers inverted dome cup ends; which were shown to be structurally superior to the conventional dome cap ends.
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Fascinating! I have learnt more about carbon fiber submarine hulls here than a weeks worth of 'truth seeking' reaction videos about the Titan accident.
A month in the lab can easily save a few hours in the library 🤠
But we cant learn anything from him hes a 50 year+ old man :-)
This week has shown me just how inhuman algorithms are. Nothing but videos revolved around imploding hauls in my feed.
And the weeks before - sharks. Taking bets on what the next thing will be - crocs/alligators... or even hurricanes
True. But at least this video is literal science instead of speculation and isn’t a reaction.
At least helps to shed light on that man's hubris. There's this much material available to laymen and some even approach the titanium capped fiber cylinder design.
He had his own engineer he paid only to tell "engineer no engineering" and he did his own research.
The unfeeling algorithm resurfaces these as if telling him, "you sure about that?"
It really shows that this failure added nothing to mankind's knowledge pool. This disaster was foretold by a handful of 11 year old videos.
This aged well. LOL
Oh man, if only that Stockton Rush guy had watched this vid!
Why would he watch this video? He obviously knew everything there is to know about building submarine hulls. And how dare anyone tell him otherwise! He'll laugh in everyone's faces when he takes his super innovative carbon fiber hull 4000 feet below sea level and *BANG!* Oops, nevermind.
Rush bragged about breaking the rules [of engineering]. We already know how he responds to subject matter experts telling him he is wrong.
This is as thrilling a presentation as the one on Dune in the 1980s version
Your point? (Other than being a comedian.)
Titan implosion got me here. 😃
Great lecture, thanks..
Im putting my faith in Woodhead Publishers!
Thank you! Sir!
An inverted concrete dome would not fair well; because concrete is weak in tension. Concrete may be feasible if it is in pre-stressed concrete; using steel reinforcements. The hydrodynamic hull has water on the inside and water on the outside and is unlikely to fail due to hydrostatic pressure. Yes, a corrugated or ring-stiffened prolate dome would fair well. In the past we successfully researched on the former, & recently,we have been researching on the latter.
amazing stuff, wow!!
11:00 600 times the strength of steel. Stockton Rush must have watched this video.
scary smart !
Can anyone explain to me why corrugation helps with a pressure vessel? I would have thought it detrimental to being squished from outside pressure.
It helps keep it rigid.
It improves stiffness not tensile strength (common mistake in videos).
Bet Stockton didn't see this video
I have a question for the presenter. How can I get in touch with him?
Wherever he i needed, he will be there.
We meet again. The next big thing will be:
A: Hurricanes
B: Alligators
C: Airplanes
D: Some out of control teen
Am I right in thinking that the thickness needed of a cylindrical or spherical hull is a constant ratio of its diameter, ignoring stiffening? If so, what effect would stiffening have on this relationship.
My reasoning for asking is to see if the material cost: internal volume ratio gets better with larger size?
No, it is not as simple as that, because the submarine pressure hull usually collapses through different inelastic instability modes. For more on this, please consult: "Pressure Vessels: External Pressure Technology-2nd Edition" by Carl T F Ross, Elsevier, Oxford, UK, 2011.
Unfortunately, I don't have access to that literature at my university.
To simplify my question:
If you had an corrugated cylindrical pressure vessel designed for, say, 100bar external pressure, that had a certain internal volume. If it were exactly scaled up by a factor of 2 (increasing weight and interior volume by 8), do you think would the resulting structure be stronger or weaker in the 100bar conditions?
I am not doing any research on this, it is just something I was curious about!
Toby B Why don't you use my conebuck.exe computer program; together with the design chart on my paper. For the conebuck.exe program; Click homepage.ntlworld.com/carl.ross/ConesThick&Thin_05_05_2011/Cones&Domes.htm.
For Corrugated Cylinder paper; CLICK:
dl.dropboxusercontent.com/u/39907336/Corrugated%20Cylinder%20Paper%202013.pdf
Thanks, according to your program, doubling the diameter, thickness and length (from the first example) results results in the exact same buckling pressure, as I predicted.
Narrated by Ozzy Osborne
Sounds like Lord Ha Ha !