Hi everyone,(adsbygoogle = window.adsbygoogle || []).push({});

To begin, sorry for my english....:S

I try to calcualte inner/outer surface stresses on a pipe submitted to instanatenous temperature variation on the OUTER SURFACE.

I know the Roark's formua giving the stresses but with an instantaneous temperature variation on the INNER SURFACE.

My question is: can i apply theses formulas to my case (but with a Delta T on the outer surface, not on the inner surface)?

For me, the Roark formulas is the combination result of the temperature formula on the thickness with the Hook formulas.

Temperature/thickness formula:

=>

Hook formula:

So, to my mind, i can apply it to my case, it is just the results sign which change (tension stresses in outer surface area and compression stresses in inner surface area for a outer negative tempeature variation).

Thanks a lot.

Bruno.

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# Stress in a tube due to external radial temperature gradiant

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