A coupling joins two shafts of 15 mm diameter (D = 15), transmitting torque T that varies f 100 to 50 N-m. The 4 bolts on the flanges are located at radius R = 30 mm and are tightened a tensile pre-stress of 200 MPa so that there is no slipping between the flanges. The effectiv (load bearing) diameter of the bolts, d, is 5 mm. Determine the safety factor for the coupling 99% reliability. The materials are machined out of steel with Sut = 1500 MPa and endurance strength Se=260 MPa. D d

A coupling joins two shafts of 15 mm diameter (D = 15), transmitting torque T that varies f 100 to 50 N-m. The 4 bolts on the flanges are located at radius R = 30 mm and are tightened a tensile pre-stress of 200 MPa so that there is no slipping between the flanges. The effectiv (load bearing) diameter of the bolts, d, is 5 mm. Determine the safety factor for the coupling 99% reliability. The materials are machined out of steel with Sut = 1500 MPa and endurance strength Se=260 MPa. D d

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.

Question

A coupling joins two shafts of 15 mm diameter (D = 15), transmitting torque T that varies fr
100 to 50 N-m. The 4 bolts on the flanges are located at radius R = 30 mm and are tightened
a tensile pre-stress of 200 MPa so that there is no slipping between the flanges. The effective
(load bearing) diameter of the bolts, d, is 5 mm. Determine the safety factor for the coupling
99% reliability. The materials are machined out of steel with Sut = 1500 MPa and endurance
strength Se=260 MPa.
D

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Design a compression coupling for a shaft to transmit 2000 N-m. The allowable shear stress for the shaft and key is 50 MPa and the number of bolts connecting the two halves are 6. The permissible tensile stress for the bolt material is 90 MPa. The coefficient of friction between the muff and the shaft surface may be taken as 0.3. M45 M42 M39 Choose one of the following solutions: M36 M45,M42,M39,M36,M33,M30,M27,M24 M33 M30 M27 M24
Design and draw a neat sketch of a cast iron protective type flange coupling to transmit “P” kW at “N” rpm. from a turbine generating n electric motor to a compressor. The service factor may be assumed as 1.35. The following permissible stress may be used: Shear stress for shaft, bolt and key material = 40 MPaCrushing stress for bolt and key = 80 MPaShear stress for cast iron = 8 Mpa Speed N in Rpm = 200Power P in kN = 16
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Please help me, I need a solution quickly, the exam will be over
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