Question

A solid steel shaft, 20 mm in diameter and 1 m long, is placed concentrically inside a hollow

duralumin shaft with inside and outside diameters of 30 mm and 33 mm respectively and a

length of 500 mm. The ends of the hollow shaft are rigidly fixed to the solid shaft. Determine

(a) the torsional stiffness of the composite shaft

(b) the maximum torque to which the composite shaft may be subjected if the allowable

shear stresses for steel and duralumin are 90 MPa and 30 MPa respectively

(c) the total angle of twist if the shaft is subjected to the torque determined in (b)

(GDU = 25 GPa; GST = 84 GPa).

Answer #1

A solid alloy shaft of 50 mm diameter is coupled in series with
a hollow steel shaft of same external diameter. Determine the
internal diameter of the hollow steel shaft if the angle of twist
per unit length in hollow shaft is 75% of that of the solid alloy
shaft. Also, determine the speed at which the compound shaft must
be driven to transmit 200 kW, if the limiting shear stresses are 55
MPa and 75 MPa in alloy and...

Find the outside and inside diameter of a mild steel hollow
shaft if with allowable shear stress (42 Mpa) with a transmitting
torque of (955*10^3 N-mm) take the ratio of inside diameter to
outside diameter (0.5)

A 50 mm diameter shaft is made from carbon steel having
ultimate tensile strength of 630 MPa. It is subjected to a torque
which fluctuates between 2000 N-m to - 800 N-m. Using Soderberg me
thod, calcukate the factor of safety. Assume suitable values for
any other data needed.

Due to the operational conditions and temperature gradient, a 70
mm diameter, 1.55 m long
steel rod within a machine assembly is subjected to a combination
of tensile loading of 150 N and
thermal loading which imposes a longitudinal force of 230 N. The
total loading results in an even
distribution of forces on the body of the rod causing it to change
its dimensions by increasing 0.5
mm in length at both ends and decreasing by 0.0125 mm at...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 7 minutes ago

asked 21 minutes ago

asked 21 minutes ago

asked 21 minutes ago

asked 22 minutes ago

asked 23 minutes ago

asked 27 minutes ago

asked 42 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago