\tau=\frac{F}{A_{s}} =\frac{4F}{\pi D^{2}}
S_{sy}=0.577 S_{y} \Longrightarrow n = \frac{S_{sy}}{\tau}
A_{b}=min(d1,d2)D
A_{t}=min(d1,d2)(w-D)
According to Budynas, in a bolted joint, shear is taken by clamping friction, and bearing does not exist. When bolt preload is lost, one bolt begins to carry the shear
and bearing until yielding slowly brings other fasteners in to share the shear and bearing. |