Stockbridge Type Damper Effectiveness Evaluation, Part II: The Influence of the Impedance Matrix Terms on the Energy Dissipated

This paper deals with a methodology to evaluate the 2x2 mechanical impedance matrix of a nonsymmetric Stockbridge type damper, based on damper translational tests on a shaker and on a 6 d.o.f model of the damper itself. A series of comparisons with data measured on a laboratory span are reported in order to investigate the effect of the single matrix terms on the global energy dissipation. The results of a software simulating the aeolian vibration behavior of a cable and damper system, accounting for the most important terms of the damper impedance matrix, are also presented.