À shaft with a diameter of 68 mm rotates at 1,213 RPM. Three discs are mounted on the shaft, with weight of w =11 N, Wa =24 N and wa =8 N, respectively, as shown in Figure below. The deflection at the corresponding mounting locations are y, =0.308 mm. V2 =0.451 mm and ya=0.185 mm, respectively. Calculate the fundamental critical speed (in RPM) using Rayleigh's method neglecting shaft properties. Use the value of critical speed in RPM to estimate the factor of safety in terms of critical speed. Enter the factor of safety only as the answer upto 4 digits of decimal. y3 W1 W3 w2 150 350 300 100

À shaft with a diameter of 68 mm rotates at 1,213 RPM. Three discs are mounted on the shaft, with weight of w =11 N, Wa =24 N and wa =8 N, respectively, as shown in Figure below. The deflection at the corresponding mounting locations are y, =0.308 mm. V2 =0.451 mm and ya=0.185 mm, respectively. Calculate the fundamental critical speed (in RPM) using Rayleigh's method neglecting shaft properties. Use the value of critical speed in RPM to estimate the factor of safety in terms of critical speed. Enter the factor of safety only as the answer upto 4 digits of decimal. y3 W1 W3 w2 150 350 300 100

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.8.7P: A stepped shaft ACE is held against rotation at ends A and B and subjected to a torque T0acting at...

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