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#42331 - 04/11/11 06:28 AM a question about the SIF factor
pooria1978 Offline
Member

Registered: 02/25/08
Posts: 264
Loc: Netherlands

Hi,

currently, I am working on a 24in line connecting to a vessel vertically, a very small gauge is connected to this line at the vicinity of the nozzle, the weldolet is a 1.5in to 24in type. knowing that the design temperature of the line is 150, I have got a overstressed spot in thermal case at the junction point, the SIF value is almost 9. I know that CII calculates the SIF based on a equal size intersection ( in my case a 24 to 24 weldolet) can any one suggest how I can calculate a less conservative/ more accurate SIF at the spot?

regards

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#42334 - 04/11/11 06:39 AM Re: a question about the SIF factor [Re: pooria1978]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
Finite Element Analysis - try FE/Pipe.
_________________________
Regards,
Richard Ay - Consultant

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#42478 - 04/18/11 11:12 AM Re: a question about the SIF factor [Re: Richard Ay]
Bob Zimmerman Offline
Member

Registered: 12/29/99
Posts: 197
Loc: Houston,TX,USA
Some of the "old" posts no longer show up, but this may help. try some more SIF searches in this forum.

http://65.57.255.42/ubbthreads/ubbthreads.php?ubb=showflat&Main=6163&Number=29110#Post29110
_________________________
Bob Zimmerman, P.E.
Vice President of The Piping Stress International Association (The PSI)

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