For stress analysis of jacketed pipes, under what conditions can it be considered a regular pipe?
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For jacketed pipes, if the operating temperatures and pressures inside and outside are roughly the same, can they be treated as ordinary pipes with a diameter equal to the outer diameter for stress analysis? Or under what circumstances can jacketed pipes be simplified to ordinary pipes for stress analysis?
If the operating temperatures and pressures of the inner and outer layers of the jacketed tube differ little, and the structural strength between the two layers is similar, then it is possible to simplify the jacketed tube to a regular pipe with a larger outer diameter for stress analysis. The premise of this simplified analysis is that the material properties of the inner and outer layers are similar, and their stress conditions are essentially the same, allowing both layers to jointly withstand the effects of pressure and temperature changes. If these conditions are met, the calculation process can be simplified, reducing the complexity of the analysis. .