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Started By
Message
re: Engineering Calculation Question
Posted on 2/3/16 at 2:30 pm to Hammertime
Posted on 2/3/16 at 2:30 pm to Hammertime
quote:
Thinnest portion would be the OD. Pretty easy pressure calculations after that (gotta get material specs though)
Not really. I mean, you could use that in order to be safe and remove any doubts, but that's not going to give you the actual answer as to what the collapse/burst actually is.
FEA is likely the only solution other than finding an equation buried in some textbook or research paper.
This post was edited on 2/3/16 at 2:32 pm
1
Posted on 2/3/16 at 2:44 pm to CarRamrod
quote:
This Paperweight is made from materials not from this earth.
Fine. But the materials it's made of are on Earth.
Try again.
Posted on 2/3/16 at 3:05 pm to KG6
There're published burst pressure equations. I've used them to create factor of safeties for pressure tests. Don't know the reference off of the top of my head, but I don't remember it being terribly difficult to find.
Posted on 2/3/16 at 4:57 pm to DownshiftAndFloorIt
quote:
You could assuming the OD is the bottom of the deepest hole
Yup, tried that
quote:
absurdly conservative
And this is why I'm hoping for an alternative method.
Posted on 2/3/16 at 4:58 pm to Upperdecker
quote:
Try reading the textbook, studying, and going to your professor's office hours. No one is going to do the work for you in the real world
I'm already in the real world
Posted on 2/3/16 at 5:01 pm to redbaron
Posted on 2/3/16 at 5:32 pm to redbaron
Vlod will be on shortly and have the answer.
Posted on 2/3/16 at 5:36 pm to Pectus
quote:
Everything on Earth is made from materials from Earth.
What about meteorite particles? Are they made from Earth?
Posted on 2/3/16 at 6:02 pm to redbaron
Off the top of my head, define burst pressure as the yield stress of the hull. Stress is a function of tensile stress and shear stress with magnitude being square root of the sum of the squares (mohr circle). Write both shear stress and tensile stress as a function of pressure and then solve for pressure.
Posted on 2/3/16 at 6:07 pm to redbaron
(no message)
This post was edited on 1/10/21 at 11:11 pm
Posted on 2/3/16 at 6:08 pm to fightin tigers
quote:
What about meteorite particles? Are they made from Earth?
I already answered that.
Posted on 2/3/16 at 6:09 pm to Pectus
(no message)
This post was edited on 1/10/21 at 11:11 pm
Posted on 2/3/16 at 6:13 pm to The Baker
quote:
If they weren't made on earth, who made them? Who makes anything?
It all comes back to the same components everywhere.
Light elements + nuclear fusion in a star = heavy elements
Heavy elements gravitate towards one another
Make planets, planetoids, meteorites
Earth is a planet. It is has the same stuff on it that meteorites have.
Therefore, if you know the components of Earth, you know the components of meteorite.
TRY A-frickING-GAIN!
Posted on 2/3/16 at 7:01 pm to Pectus
From and found are two different words.
Posted on 2/3/16 at 7:14 pm to The Baker
Id just model the area around the worst looking hole and stick it in ANSYS and see what that piece yields at. That should give good start if we're assuming that's the weakest point in the vessel.
Posted on 2/3/16 at 7:20 pm to DownshiftAndFloorIt
(no message)
This post was edited on 1/10/21 at 11:10 pm
Posted on 2/3/16 at 7:21 pm to redbaron
FEA is one of the worst things to use for analysis in many cases because you have to make to many assumptions. Depending on the assumptions used, you can make it work in your favor or against you.
Posted on 2/3/16 at 7:22 pm to The Baker
Getting underqualified people into shite they shouldn't be frickin with since 2012
Posted on 2/3/16 at 7:25 pm to redbaron
87
Posted on 2/3/16 at 7:30 pm to mikrit54
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