A shaft with a diameter of 51 mm rotates at 1,225 RPM. Three discs are mounted on the shaft, with weight of w,=9 N, W2=%3D26 N and wa = 8 N, respectively, as shown in Figure below. The deflection at the corresponding mounting locations are y, =W3= 0.179 mm, respectively. Calculate the fundamental critical speed (in RPM) usingУз0.305 mm, y, =Y20.45 mm andRayleigh's method neglecting shaft properties. Use the value of critical speed in RPM to estimate the factor of safety in termsof critical speed.Enter the factor of safety only as the answer upto 4 digits of decimal.Page 309y3y2W3W1w2150350300100

Given , Diameter of the shaft = 51 mm Speed of the shaft , N =1225 rpm. w1 = 9 N ,w2 = 26 N . w3…

A shaft with a diameter of 51 mm rotates at 1,225 RPM. Three discs are mounted on the shaft, with weight of w =9 N, W, = 26 N and wa= 8 N, respectively, as shown in Figure below. The deflection at the corresponding mounting locations are y, =D 0.305 Va = 0.179 mm, respectively. Calculate the fundamental critical speed (in RPM) using mm, y, = 0.45 mm and 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. Page 309 yi y3 w3 W1 W2 300 100 150 350

A shaft with a diameter of 51 mm rotates at 1,225 RPM. Three discs are mounted on the shaft, with weight of w =9 N, W, = 26 N and wa= 8 N, respectively, as shown in Figure below. The deflection at the corresponding mounting locations are y, =D 0.305 Va = 0.179 mm, respectively. Calculate the fundamental critical speed (in RPM) using mm, y, = 0.45 mm and 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. Page 309 yi y3 w3 W1 W2 300 100 150 350

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 3.7.8P: A tubular shaft being designed for use on a construction site must transmit 120 kW at 1,75 Hz, The...

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