Internal Heads thermal expansion
Internal Heads thermal expansion
(OP)
If I have an internal head welded on a cylindrical shell and it works at a temperature higher than the design temperature of the cylindrical shell, how can I take into account for the stresses generated by the thermal expansion of the internal head?
Does exist any formula to take into account for the stresses due to the thermal expansion of the internal head or is necessary to make a FEM analysis?
Does exist any formula to take into account for the stresses due to the thermal expansion of the internal head or is necessary to make a FEM analysis?





RE: Internal Heads thermal expansion
corus
RE: Internal Heads thermal expansion
To calculate the temperature distribution, if you have no test data, probably FEM is the only way to go. And of course also the stresses would be determined with the same model.
However it all depends on where is and how is shaped the thermal source. For a similar (simpler) problem , the thermal stress in a vessel skirt due to the longitudinal gradient, I've used in the past a simplified approach by formula.
prex
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