DAMPING OF FREE OSCILLATIONS IN MOVING ELASTIC-SYSTEMS

The characteristic equation for a linear elastic system having zero na tural frequencies to which a linear elasto-viscous oscillation damper is attached is derived. It is shown that if this damper has one degree of freedom and is not connected to a fixed base, the characteristic e quation can be reduced to a form similar to that obtained for the case when the elastic system has no zero natural frequencies. The problem of finding the values of the damper parameters for which the minimum o f all the attenuation decrements, corresponding to the least non-zero natural frequencies, has the maximum possible value, is similar to the same problem for a non-free elastic system.