Thank you. Finally somebody explains how it correlates to if you have a material yield stress value.

Excellent explanation. Right to the point. Nice job Dr Megan

Could use your clear explanations in a tutoring session right about now for a solids class Im taking online. Great job!

Great explanation. Thanks!

Could this calculation be used for a piece of pipe laid down in a trench and up the other end...simulating the pipe in 'compression', and not 'tension', and the compression load is the weight of the tube?

wow, that was great!

Thank you, very helpful!

Short and nice video for quick understanding

can you help me on Explain the derivation of hoop stress and radial stress for sphere shell and its application in modern technology.

Thank you so much!!

great video

Mam can we say that Radial & Hoop Stress is one kind of NORMAL Stress..??

Thank you and appreciated! How do calculate hoop stress when the radius vary along the pipe. Rahman

@thomaswilliams9320

4 жыл бұрын

Hoop stress should be thought of as applying (on a cylinder) to thin strips of the cylinder. if you have a varying radius then you have varying hoop stress as you go along - if you think about the direction of the forces associated with the stress they only act along a circle of a fixed radius for each of these different strips, hence if you wanted to find the average hoop stress, you would just find the average radius and perform the calculation with that. In a real world scenario this wouldn't be too useful - the only hoop stress you would be interested in would be the maximum hoop stress, and you only need one radius value (the largest) to perform this calculation. If you are talking about axial stress, then since this acts along the direction of the cylinder where the radius is changing, it would certainly affect your calculations. I'm entirely sure how you would go about finding the axial stress from this, but I have a feeling you find the average out the axial stress by integrating along the length of the cylinder? I'm kind of new to this topic so if anyone would like to add/correct anything I've said it would really help me out

@tjgarcia2107

2 жыл бұрын

Integration

this is why i use wraps during squats

Hi, I have a slightly strange question if you’re still around on here. I have been speaking to a flat earther who seems to think he’s found ‘proof’ that the earth should rip itself apart due to hoop stress caused by the centrifugal force due to rotation (as in a flywheel). I’ve tried to get through to him that due to the far greater opposing force of gravity, the net acceleration experienced by any mass within the earth is towards the axis of rotation and therefore no hoop tension could be present in the crust of the earth - instead it would be under compression, not tension. My analogy for this would be a pressure vessel with an internal pressure of 1psi situated within a pressurised environment at 300psi, resulting in a net external pressure of 299psi which will place the vessel walls under compression, not tension. Could you confirm that this analogy is correct, with respect to the forces experienced by a theoretical ‘hoop’ around the earths equator? Thanks in advance

@StarmanGames

3 жыл бұрын

Centrifugal force of the Earth can be easily calculated and is much less than force of gravity, you are correct there. That would be a decent analogy to use in my opinion but I'm certainly no expert.

love the vid but how did you get 250MPa did you use the yield strength and divided it by the safety factor of 2? please let me know I just need a confirmation.

@johannes7434

Жыл бұрын

Yeah

I Finally get it thanks, understanding should help my rocket motor from exploding.🙂👍

Is hoop stress the same as circumferential stress?

@Burrahboy

6 жыл бұрын

Yes

Safety factor is 2 so it should be 25Mpa not 12.5.. right??

Thank you ,very helpful this video for me

@metalhub5625

3 жыл бұрын

kzread.info/dash/bejne/m2uEqpuYe9HSgJM.html

Thank you!!!!

Thanks!

hold on, why is axial stress divided by 2t? can anyone explain a little bit?

@AbdulHadi-dd3mq

5 жыл бұрын

same question here

@Tanoforfucksake

4 жыл бұрын

Also, why is it p•r & not p•d? I thought hoop stress was p•d / 2t?

@thomaswilliams9320

4 жыл бұрын

@@Tanoforfucksake you're completely correct, this equation simply decides to use radius instead of diameter. If you sub r=d/2 into the equation in the video then you get your equation of pd/2t

@fiazalam441

4 жыл бұрын

@@thomaswilliams9320 search in thin walled formula derivation.you will understand.

Mam make video on hoop tension

Absolutely! BTW your voice is so good👌

KLASS ...!!! 👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻

the little example at the end was nice, but wouldn't it be better to actually show the derivation of where the formulae for hoop stress comes from?

Good explanation 👍

love ur voice

@ShivamSharma-bf5pp

4 жыл бұрын

Pdhai pr dhyaan dena chahiye bro😅😅

thank you sir

@svg98

6 жыл бұрын

That's a woman, but okay ;)