A MODIFIED PASSIVE TUNED ABSORBER FOR SECONDARY SYSTEMS UNDER RANDOM-EXCITATION

Secondary systems may have to endure severe vibration amplitudes under the influence of the primary structures on which they are mounted. A series of numerical case studies are presented in this paper to invest igate the effectiveness of a tuned vibration absorber with an impact d amper, to attenuate the excessive vibration amplitudes of light second ary systems. In addition, experimental measurements are reported for s ome selective cases and comparisons are made with numerical prediction s. This suggested configuration seems suited ideally as an add-on enha ncer for existing conventional absorbers. Results are presented for ra ndom white noise excitation. (C) 1997 Academic Press Limited.