An electric motor of mass M, mounted on an elastic foundation, is found to vibrate with a deflection of 0.15 m at resona

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An Electric Motor Of Mass M Mounted On An Elastic Foundation Is Found To Vibrate With A Deflection Of 0 15 M At Resona 1 (102.05 KiB) Viewed 22 times

An electric motor of mass M, mounted on an elastic foundation, is found to vibrate with a deflection of 0.15 m at resonance. It is known that the unbalanced mass of the motor is 8% of the mass of the rotor due to manufacturing tolerances used, and the damping ratio of the foundation is 5 = 2.5%. Determine the following: the eccentricity or radial location of the unbalance mass (e) The peak deflection of the motor when the frequency ratio varies from resonance - the additional mass to be added uniformly to the motor if the deflection of the motor at resonance is to be reduced to 0.1 m NB : assume that the eccentric mass remains unaltered when the additional mass is added to the motor m x(1) Electric motor, mass M to с 0.000