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ASME fatigue assesment

ASME fatigue assesment

ASME fatigue assesment

(OP)
Hello everybody.

After recalculated vessel primarily designed by ASME using  AD-2000 . I obtained for heds and achell
similar results as regards strenth   but big difference in fatigue assesment .
Allowable no. of cycles fol cylindricall part  N = 200 000 after AD-2000 ,  and N = 10 600 000 after ASME. I can use ASME Section VIII Division 1 only so i canĀ“t  check the original ASME calculation.
Who can tell me what is the N after ASME for cylinder ID=1000mm, Length= 1000mm,
Shell thick=30mm, Corr.all=7mm
Join eff.=0,85  , Material- UNS S31803 (A-240) , Temp=218 deg .C ,  Fluctuation 0/24 bar
Cylinder made without inperfections with 1 L,seam.

Wenzel

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