Bolted Flange in Bending
Bolted Flange in Bending
(OP)
Anyone know where I can find a good hand calc for a bolted circular flange connection in pure bending?
I need a calc that will give me the axial force on each bolt.
I need a calc that will give me the axial force on each bolt.





RE: Bolted Flange in Bending
I will ask a question in return - why do you need this information?
RE: Bolted Flange in Bending
RE: Bolted Flange in Bending
RE: Bolted Flange in Bending
RE: Bolted Flange in Bending
RE: Bolted Flange in Bending
Imagine a round flange under bending with 12 bolts - the bolt at top dead center takes a large percentage but the others take smaller percentages decreasing to the neutral axis of the joint.
I believe these percentages are based on the general geometry..but I am not sure.
I just wanted to see if there was any literature whereby someone has already done the legwork.
RE: Bolted Flange in Bending
Unfortunately, you are going to have to get up to your elbows in the calc - no easy way around it. And, you might learn something more in the process :-O as opposed to having someone hadn you the calc.
RE: Bolted Flange in Bending
RE: Bolted Flange in Bending
for pipe flange w/ extermal loads & moments:
Kellogg's Piping Design book, also:
Walther J. Stikvoort's articles:
"Proper Interface Design for Pressure Vessels" in Chemical Engineering June '94 p133-4.
"Piping Reaactions on Pressure Vessel Nozzles" in Chemical Engineering, July 7, '86 pp51-3.
"Pressure Vessel Design, Nozzle Piping Reactions" in Encyclopedia of Chemical Processing & Design,Vol.42, [NY:Marcel Dekker] 1993, pp 237-44.
Also: C.J. Dekker, "External Loads on Nozzles," Int.Jnl Pres. Ves. & Piping, 53(1993) p.335-350.
RE: Bolted Flange in Bending
RE: Bolted Flange in Bending
M=moment
N= number of bolts
D=pitch circle diameter
Steve Braune
Tank Industry Consultants
www.tankindustry.com