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Flaring Stress

Flaring Stress

Flaring Stress

(OP)
Does anybody know how to work out the Cycles to failure of an accumulator/pressure vessel?

An alternative to ASME or PD5500?

RE: Flaring Stress

You could try API-579.  Why would you not want to do this type of analysis to ASME or PD5500?

RE: Flaring Stress

(OP)
I am just looking for alternatives really.

Baically I have looked at many variations.  It is more to do with the flaring stress side of things on a threaded Cylinder (Pressure Vessel) I am looking for?

Anyone have any ideas? Does this always involve the natural log value?

Thanks

RE: Flaring Stress

The natural log value of what?

RE: Flaring Stress

(OP)
Where the e value = 2.718281828.....

RE: Flaring Stress

I think I know what the natural log is...

Usually though, one takes the natural log of some value (usually a non-dimensional number).  What is it that you are taking the natural log of (w.r.t. your fatigue analysis)?

RE: Flaring Stress

(OP)
Well we had an e value in an equation that we were using. At first we were putting the e value in as the wall thickness of the cylinder, but apparently this was wrong so we were told to put e as 2.7182818 every time?!?! This seems wrong to me, what should we be taking the natural log of?

RE: Flaring Stress

You're going to have to be a bit more helpful.  What equation are you refering to?  What exactly are you trying to calculate?  Details - we need details...

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