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Unified Engineering
Spring 2004
Problem M11
A solid steel shaft of length 3 m is required to transmit a torque of 200 kNm. The
maximum allowable shear stress that the steel can support,
t
y
, is 200 MPa (shear yield
stress).
(a)
If the shaft has a solid circular cross section, determine the minimum diameter of
the shaft to transmit the torque without yielding.
(b)
If the shaft is instead hollow with a ratio of external to internal diameter of 5/4,
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Unformatted text preview: what is now the required diameter of the shaft, what is the weight saving over case (a)?. (c) What is the ratio of (i) the angle of twist between the ends of the shafts and (ii) the torsional stiffness in the two cases?. (d) What is the maximum extensional stress acting in the shaft in (b), in what direction(s) does it act?....
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This note was uploaded on 01/28/2012 for the course AERO 16.01 taught by Professor Markdrela during the Fall '05 term at MIT.
 Fall '05
 MarkDrela

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