A solid aluminum shaft of L=9 m long and diameter 34 mm is to be replaced by a tubular steel shaft of same length and same outside diameter, so that shaft could carry both same torque and same angle of twist over the length. What must be the inner diameter d of the tubular steel shaft?. Gs= 74 GPa, Gal= 40 GPa. Calculate polar moment of inertia for solid (Ja), Angle of twist for solid section (0a) in terms of T , Angle of twist for steel in terms of T& Js (steel polar moment of inertia)

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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A solid aluminum shaft of L=9 m long and
diameter 34 mm is to be replaced by a tubular
steel shaft of same length and same outside
diameter, so that shaft could carry both same
torque and same angle of twist over the length.
What must be the inner diameter d of the tubular
steel shaft?. Gs= 74 GPa, Gal= 40 GPa. Calculate
polar moment of inertia for solid (Ja), Angle of
twist for solid section (0a) in terms of T, Angle of
twist for steel in terms of T& Js (steel polar
moment of inertia) .
Transcribed Image Text:A solid aluminum shaft of L=9 m long and diameter 34 mm is to be replaced by a tubular steel shaft of same length and same outside diameter, so that shaft could carry both same torque and same angle of twist over the length. What must be the inner diameter d of the tubular steel shaft?. Gs= 74 GPa, Gal= 40 GPa. Calculate polar moment of inertia for solid (Ja), Angle of twist for solid section (0a) in terms of T, Angle of twist for steel in terms of T& Js (steel polar moment of inertia) .
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