Recent content by bjarneEng

Thank you for your attention. I will post more questions if I get the time to solve my problem :D

No I have not :D I was just arguing: if I don't know what the inner or outer dia of the cylinder will be after loading it is difficult to set any constraints for the differential equation.

Roark includs the stress assosiated with a temprature gradient over a wall. You are right we need to account for poisson ratio effect.

The pipe is not constrained axially so there is only thermal strain in the axial direction. The temperature profile I believe would be T(r)=(T.2-T.1)*(ln(r/r.1)/(ln(r.2/r.1)+T.1 ("1" inner face; "2" outside face) I would assume there is only radial stress and hoop stress in the pipe. As...

Hi, Condition (a) But what I really want is to know if there are any analytical approach to this problem. I have access to FEA tools to calculate the result, but I would like to run the problem through an excel spread sheet or similar in the future. The pipe is pressurized, but I would assume I...

What would be the calculation method? The pipe has an inner diameter of 800mm and a wall thickness of 55mm.

I have a pipe holding liquid at 80°C. The outside atmosphere is -2°C. The pipe gets a temperature gradient over the wall thickness. The outside fibers will thus restrain the inner fibers from expanding. I would like to know the increase in the inner dia of the pipe. I have found temperature...