What is the weld joint coefficient for a pressure vessel cylinder?
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I read in a book that the weld joint coefficient for externally pressurized cylinders is always taken as 1. Why is that?
The weld coefficient should have no impact on the calculation of external pressure, so it is taken as 1 in all cases
The weld joint coefficient is selected based on the type of weld joint and the inspection ratio. Although external-pressure vessels are less dangerous than internal-pressure vessels, I have never heard of a case where the welding joint factor for the shell sections under external pressure was set to 1.
Just look up the concept of the weld coefficient and you’ll know.