Research
T327: Methods of Evaluating Dynamic Characteristics of Dampers, Spacers and Spacer-Dampers
The prediction of accurate vibration levels on transmission lines requires, amongst other elements, a knowledge of the dynamic characteristics of vibration controlling devices which are installed on them.Most dampers, spacers and spacer-dampers used for this purpose exhibit non linear dynamic mechanical characteristics. The modal parameters (resonance frequency, viscous damping, modal mass and mode shapes) of 3 types of Stockbridge dampers, 3 types of two-conductor, 1 type of three-conductor and