An electric motor of mass M, mounted on an elastic foundation, is found to vibrate with a deflection of 0.15 m at resona
Posted: Sat May 21, 2022 10:49 am
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