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Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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
Transcribed Image Text:7. A shaft subjected to bending moment varying from -200 N m to +s00 N m and a varying torque
from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch
sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The
load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of S kN. Find
the diameter of bolt required according to
Max imum principal stress theory;
Max imum shear stress theory:
Maximum principal strain theory:
Maximum strain energy theory; and
Max imum distortion energy theory.
a.
b.
c.
d.
e.
Take permissible tensile stress at elastic limit - 100 MPa and poisson's ratio - 0.3
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- Required information A solid square rod is cantilevered at one end. The rod is 0.6 m long and supports a completely reversing transverse load at the other end of ±1.7 kN. The material is AISI 1080 hot-rolled steel. If the rod must support this load for 5 x 104 cycles with a design factor of 1.5, what dimension should the square cross section have? Neglect any stress concentrations at the support end. What will the strength of the metal be at 5 x 104 cycles? The strength of the metal at 5 x 104 will be MPa.arrow_forwardA rigid coupling with 30 inches of bolt circle diameter transmits a torque of 18,000 lb-in. The coupling material has a yield strength of 90,000 psi. The coupling is fastened by six bolts. Assume design factor of N=3 Calculate the diameter of each bolt.arrow_forwardAnswer is closer to 32 kN/m, but how does it get there?arrow_forward
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