Recent content by bjarneEng

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    Thermal expansion of a pipe with wall temperature gradient

    Thank you for your attention. I will post more questions if I get the time to solve my problem :D
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    Thermal expansion of a pipe with wall temperature gradient

    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.
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    Thermal expansion of a pipe with wall temperature gradient

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

    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...
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    Thermal expansion of a pipe with wall temperature gradient

    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...
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    Thermal expansion of a pipe with wall temperature gradient

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

    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...
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