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Design of Bolted Joints I

A bolted join...

Question

A bolted joint is used to connect two components. The combined stiffness of the components is twice the stiffness of the bolt. The tightening of the nut results in a preload of 6 kN in the bolt.

The maximum load the assembly can take is

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Solution

$F_{b} = F_{i} + \frac{K_{b}}{K_{b} + K_{c}} F_{e x t}$

$When, K_{b} >> K_{c}$

$F_{b} = F_{i} + \frac{1}{1 + \frac{K_{c}}{K_{b}}} F_{e x t}, \frac{K_{c}}{K_{b}} = 0$

$F_{b} = F_{i} + F_{e x t}$

$F_{b} = 6 + 12 = 18 k N$

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