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Is Tresca Stress = Intensity ?

Question asked by Loic Ancian on Jul 2, 2010
Latest reply on Jul 2, 2010 by Loic Ancian

because I remember that Tresca is abs(P1-P2) or abs(P1-P2) or abs(P1-P2) that must be below yield stress.


Intensity is only P1-P3, is it the same thing?



When designing a pressure vessel, what stress has to be used : Tresca or Intensity.?