For a bolted assembly with eight bolts, the stiffness of each bolt is ký = 1.0 MN/mm and the stiffness of the members is

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For A Bolted Assembly With Eight Bolts The Stiffness Of Each Bolt Is Ky 1 0 Mn Mm And The Stiffness Of The Members Is 1 (99.84 KiB) Viewed 21 times

For a bolted assembly with eight bolts, the stiffness of each bolt is ký = 1.0 MN/mm and the stiffness of the members is km = 2.6 MN/mm per bolt. The bolts are preloaded to 75 percent of proof strength. Assume the external load is equally distributed to all the bolts. The bolts are M6 x 1 class 10.9 with rolled threads. A fluctuating external load is applied to the entire joint with Pmax= 60 kN and Pmin = 40 kN. (a) Determine the fatigue factor of safety using the Goodman criterion for overload in both Pmax and Pmin (b) Determine the fatigue factor of safety using the Goodman criterion for overload only by Pmax: Note that you need to derive the expression for ng for this case.