hello sir, my name is abdul haris, i came from indonesia, i wanna ask you about pipe stress analysis, from what i know stress in pipe and in cylinders almost same, my final task is about pipe stress analysis in pipe bend using Ansys and then validating with analytical calculation and the output is von mises stress, to know von mises i have to search principal stress in 3 axis, i used hoop and radial stress in your explanation, but the axial stress i use longitudinal stress which is sum of axial stress, internal pressure and moment bending, can you explain to me how to calculate moment bending in pipe bend please ? thank you sir
really, i think they are just upto the mark . Apart from this he delivered the lecture very well . HATS OFF for his services ,continued from 2009- 2020 🤗
I was struggling to remember Hoop, so the girlfriend said to me "Just remember, Pat Remembers Pissing Rapidly Round Rodgers (Private Party) Run Rodger, Run Run Run!
Hi there, do you have any videos explaining lames equations and how to draw graphs representing internal, external, combine and intermediate pressures?
considering Lame's equation I am little bit confused about the tangential (Hoop) stress distribution and radial stress distribution.sign convention in book is different for hoop and radial. whether to take p0-pi or pi-po.
For calculating thickness of pipe, i needed value of Circumferential Stress of ASTM a106 gr b, Can anyone help me out with the value? I could not find it on google
How about a swimming pool. I am trying to build a pool wall with cinder blocks 24ft diameter. I want to use a band around each row, there will be 7, and need to know what the tensile strength of the band needs to be.
tarun nallur are you sure about it? I could not go through the derivation that was given in the book they seemed to have different expression that was way too long. I learned the concept from this video only. So if you are sure about what you said please let know
i have a question, longitudinal stress try to increase the length of the vessel and radial stress try to increase the diameter of the vessel .what about hoop stress ? what hoop stress will do?
"We live in 3 dimensional space, or at least I do" Said the man in the 2D video with no proof >.> suspicious
don't be suspicious, don't be suspicious XD
Thank you, Sir for first identifying your audience. Excellent tutorial!
I am from Bangladesh .
I won't make you too dishonoured by thanking you. You are helpful, sir.Salute......
Helpful. but we magically came up with the equation . I would like to see derivation of the formulas.
What were the pressures pi and po? Seems like you forgot to write those down
Thanks to clear. Respect from India
hello sir, my name is abdul haris, i came from indonesia, i wanna ask you about pipe stress analysis, from what i know stress in pipe and in cylinders almost same, my final task is about pipe stress analysis in pipe bend using Ansys and then validating with analytical calculation and the output is von mises stress, to know von mises i have to search principal stress in 3 axis, i used hoop and radial stress in your explanation, but the axial stress i use longitudinal stress which is sum of axial stress, internal pressure and moment bending, can you explain to me how to calculate moment bending in pipe bend please ? thank you sir
His circles are so neat it scares me
really, i think they are just upto the mark . Apart from this he delivered the lecture very well .
HATS OFF for his services ,continued from 2009- 2020 🤗
once you have the stresses, are these to be checked against the normal limit design stress of the material?
I was struggling to remember Hoop, so the girlfriend said to me "Just remember,
Pat Remembers Pissing Rapidly Round Rodgers (Private Party)
Run Rodger, Run Run Run!
I don't get it.
Oh well. Better go study then.
John Keegan i dont get it , can u explain it :D
great explanation. thumbs up
i need to know about the thickness of boiler plate. can you explain about it?
Hi there, do you have any videos explaining lames equations and how to draw graphs representing internal, external, combine and intermediate pressures?
thanks for the explanation. I'm hopelessly trying to understand why radial stress is negative. I can't seem to find an answer.
+Abdullah Hussain Cuz its compressive !!
considering Lame's equation I am little bit confused about the tangential (Hoop) stress distribution and radial stress distribution.sign convention in book is different for hoop and radial. whether to take p0-pi or pi-po.
I hope he explain how the equations comes out.
Pi = ?
or should we "reverse-engineer" it?
For calculating thickness of pipe, i needed value of Circumferential Stress of ASTM a106 gr b,
Can anyone help me out with the value? I could not find it on google
What if there is a change of temperature inside the vessels?
what is the axial stress for a thin walled pressure vessel? P * Ri / 2t?
Thanks :)
you didnt write the Pi and Po. How did you solve the question?
pi= -(sigma r)
thank you
this is perfect and simple
How about a swimming pool. I am trying to build a pool wall with cinder blocks 24ft diameter. I want to use a band around each row, there will be 7, and need to know what the tensile strength of the band needs to be.
If I am not mistaken, your formulas for hoop stress and radial stress are wrong. The +- sign in the middle is meant to be the opposite for both.
tarun nallur are you sure about it? I could not go through the derivation that was given in the book they seemed to have different expression that was way too long. I learned the concept from this video only. So if you are sure about what you said please let know
It is right
i have a question,
longitudinal stress try to increase the length of the vessel and
radial stress try to increase the diameter of the vessel .what about hoop stress ? what hoop stress will do?
Hoop stress prevent the vessel from explosion. Google state of stress and you will find a proper answer.
thx professor
Perfect!! :)
very helpful..!
thank you very much,I want to know how to calculate the diameter of a thick tube after pressurization,can you give me some guidance.
I came here for derivation but anyways thanks it helped me a liitle.
Geky Fela did you find the derivation? I am really not being able to imagine the direction of these stresses.
@@thinkingtank1027 same here....what causes radial n hoop stress in thick cylinders?
sir,
For a thin wall vessel; D/t>=20 or r/t >=20 ?
I am confused as in some papers it is the ratio of radius to that of thickness.
Unfortunately, there is no standard definition. It may be a function of the application.
r/t>=10
can you explain more about radial stress please
Hey man, thx a lot.
THANK YOU!!!
THANK YOU SIR
How is the mean diameter larger that the diameter? Shouldn't is be (100mm+150mm) / 2.......
Dm = 125mm?
he wrote radius, then worked out the diameter. so the mean diameter would be ((2x100)+(2x150))/2
So much's for everything
I think im an idiot
قد افلح من صلى على محمد
come to india we will teach mechanics
come to usa we will go to space
whitout sound !!!
shite