Learning Forum

[max1989]

Hi,

I have a question about how to use beam probe data to conduct connection failure analysis? I know how to get the normal and shear stresses due to the axial force and shear force. Also, I know how to obtain the shear stress due to the torque. However, the bending moment is a bit unclear to me. Please take a look at the model below.

It is a 2-part flange assembly. The end of the pipe is fixed rigidly. There are four beam connections connecting the two parts together. The beams are scoped to the imprint of washers.

[dlooman]

Normally bolts aren't evaluated for moment. The moment is a self-limiting load and the bonded connection of the bolt head to the flange may be exaggerating it. In real life the moment can't be more than the axial load times the radius of the bolt head and is probably much less than that if you think about the distribution of the contact pressure under the bolt head.