A 350 mm diameter solid steel drive shaft transmits 4500 kW at 120 rpm to a hollow steel shaft via a flanged coupling. The coupling has 12 bolts with a safe working stress of 48 MN/m² fitted on a pitch circle diameter of 640 mm. The hollow shaft has a diameter ratio of 0.75 with the same external diameter as the drive shaft. Calculate EACH of the following: (a) the minimum diameter of the coupling bolts;
A 350 mm diameter solid steel drive shaft transmits 4500 kW at 120 rpm to a hollow steel shaft via a flanged coupling. The coupling has 12 bolts with a safe working stress of 48 MN/m² fitted on a pitch circle diameter of 640 mm. The hollow shaft has a diameter ratio of 0.75 with the same external diameter as the drive shaft. Calculate EACH of the following: (a) the minimum diameter of the coupling bolts;
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Note: Modulus of Rigidity for steel=80GN/m2
Transcribed Image Text:9.
A 350 mm diameter solid steel drive shaft transmits 4500 kW at 120 rpm to a
hollow steel shaft via a flanged coupling. The coupling has 12 bolts with a safe
working stress of 48 MN/m² fitted on a pitch circle diameter of 640 mm. The
hollow shaft has a diameter ratio of 0.75 with the same external diameter as the
drive shaft.
Calculate EACH of the following:
(a) the minimum diameter of the coupling bolts;
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