Bolted Flanged Connection
Bolted Flanged Connection
(OP)
I have a bolted flange connection that is not in a pressure situation. It is basically a connection in a pipe that is used as a spreader bar. It has a particular moment and shear at the point of the flange. My questions are:
1. Do I use the specific recommended torque for the size of the bolt or do I base it on my calculated stress in the bolt?
2. How do I assume how the load is distributed compression and tension throughout the bolt pattern? I would like to assume half compression, half tension, but I know that is not true.
Thank you in advance for your help.
1. Do I use the specific recommended torque for the size of the bolt or do I base it on my calculated stress in the bolt?
2. How do I assume how the load is distributed compression and tension throughout the bolt pattern? I would like to assume half compression, half tension, but I know that is not true.
Thank you in advance for your help.





RE: Bolted Flanged Connection
It assumes pivot @ the bottom edge [i.e., shear on lip - not the bolts]
Bolt Force Fi = M*Li/[L1^2 + L2^2 +L3^2 +......]
M = moment
L1 = distance from pivot to Bolt 1 cL, etc.
RE: Bolted Flanged Connection
1 ? What is "it"? Your question isn't clear.
RE: Bolted Flanged Connection
It was the torque value. I would assume that it is good practice to create a preload that is equal to or greater than any tensile force the bolt would see in use.