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TOPIC: Calculating Fatigue life using BS7608
#3196
yaw (User)
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Calculating Fatigue life using BS7608 3 Years, 1 Month ago Karma: 0  
Hello,
I have calculated the hoop stress for each internal pressure spectrum(100,70,40,30,20 and 10 bar) and found the equivalent number of cycle at the peak stress range as 1.799. I then carried thickness correction for peak hoop stress value (which is now my peak stress) as per the BS7608 standard and calculated for S. I went on to calculated for N, number of cycles to failure for the corrected peak stress using the formula log(N) = 12.0900 0.2279 x 2 3log(Sr) (class F2 joint).

I finally found my fatigue life by finding the inverse of the n (equivalent)=1.799/N.

Please advise if this is the right steps to follow.

Regards,
Yaw
 
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#3197
JohnDoyle[Admin] (Admin)
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Re:Calculating Fatigue life using BS7608 3 Years, 1 Month ago Karma: 492  
You can use this Repository item to check your work.
 
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Last Edit: 2013/12/06 07:33 By JohnDoyle[Admin].
 
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