Bolt MAWP
Bolt MAWP
(OP)
Hi All,
Can anyone please tell me how to find the bolt MAWP. Normally Compress & PV Elite does not calculate it but ASPEN BJac does it.
I whant to know what is formula used to calulate the MAWP of Bolting??
Regards,
KR
Can anyone please tell me how to find the bolt MAWP. Normally Compress & PV Elite does not calculate it but ASPEN BJac does it.
I whant to know what is formula used to calulate the MAWP of Bolting??
Regards,
KR





RE: Bolt MAWP
RE: Bolt MAWP
Given the difference between design and service bolt stresses this may not be a particularly useful calculation, but it could be done.
Regards,
Mike
RE: Bolt MAWP
Please see attached flange cal. & MAWP summary. where you can find the bolting MAWP. The program used in ASPEN B-Jac
If possible please explain how the program calculates it.
Regards,
KR
RE: Bolt MAWP
Sorry i could understand your reply. Could you please give it as a formula for better understanding. And also refer to my previous reply to XL83NL.
Regards,
KR
RE: Bolt MAWP
Tom Barsh - Codeware
speaking for myself only, not an official Codeware opinion
RE: Bolt MAWP
A bolt does however have a max allowable stress, and stress may be expressed in the same unit as MAWP (e.g. MPa), even though theyre 2 different things. I suggest you do some reading of ASME VIII-1 app 2 first.
RE: Bolt MAWP
Regards,
Mike
RE: Bolt MAWP
Anyway i will read App-2 again as XL83NL & TomBarsh said.
Regards,
Mike
RE: Bolt MAWP
RE: Bolt MAWP
23.06(MAWP for bolting)=12.8(DP)*138949(WM2:bolt load determining AM)/83625(WM1:bolt load due to pressure)*8572.9(AB)/7905.3(AM)
This gives the pressure which generates the allowable operating stress in the bolting (consistently with MAWP definition).
Can't imagine a real world situation where this value would be dominant, but in this case the MAWP for the vessel would be determined by bolting.
prex
http://www.xcalcs.com : Online engineering calculations
http://www.megamag.it : Magnetic brakes and launchers for fun rides
http://www.levitans.com : Air bearing pads
RE: Bolt MAWP
Thanks again Prex.
Regards,
KR