A rotor of mass 10 kg is mounted midway on a 2 cm diameter horizontal shaft supported at the ends by two bearings. The bearing span is 80 cm. Because of certain manufacturing defect, the centre of gravity of the disc is 0.1 mm away from the geometric centre of the rotor. If the system rotates at 3000 r.p.m. Determine, the amplitude of the steady state vibration and the dynamic load transmitted by the bearing. Take E = 200 GN/m².
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- Mass of the rotor (m) = 10 kg - Diameter of the shaft (d) = 2 cm = 0.02 m - Length of the bearing span (L) = 80 cm = 0.8 m - Eccentricity (e) = 0.1 mm = 0.0001 m - Rotational speed (N) = 3000 rpm - Modulus of Elasticity (E) = 200 GN/m = 200 x 10^9 N/m^2 Show more…
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