Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Transcribed Image Text:1.) A hollow shaft 4m long transmitted a
torque of 25 kN-m. The total angle of twist
in this length is 3 degrees and the
corresponding maximum shear stress is
80 MPa. Determine the external and
internal diameter of the shaft if G = 85
GPa.
2.) A shaft is required to transmit 245kW
power at 240 rpm. the maximum torque is
50% more than the mean torque. the shear
stress in the shaft is not to exceed 40N/
mm^2 and the twist is 1 degree per meter
length. Taking G=80kN/mm^2, determine
the diameter required if,
a. the shaft is solid
b. the shaft is hollow with external
diameter twice the internal diameter
3.) What are the maximum diameter and
shear stress induced in the solid shaft
which will not twist more than 2 degrees in
a length of 4.5m when subjected to a
torque of 15 kN-m? G = 82 GPa
4.) A solid circular shaft has to transmit
155kW of power at 250 rpm. If the
allowable shear stress is 85 MPa and the
permissible twist is 1 degree in a length of
4 m, find the diameter of the shaft. G = 82
GPa
5.) A solid steel shaft in a rolling mill
transmits 25 kW of power at 3 Hz.
Determine the smallest safe diameter of
the shaft if the shear stress is not to
exceed 40 MPa and the angle of twist 0 is
limited to 6°in a length of 4.5 m. Use G =
83 GPa
2023-05-21
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