Proceedings Vol. 23 (2017)
ENGINEERING MECHANICS 2017
May 15 – 18, 2017, Svratka, Czech Republic
Copyright © 2017 Brno University of Technology, Faculty of Mechanical Engineering, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)
list of papers scientific commitee
pages 350 - 353, full text
In the first part of the paper types of vibrations of overhead transmission lines have been presented indicating the need to reduce these vibrations with the use of different dampers. In the second part the results of the experiments with mass damper, called Stockbridge damper, and its efficiency are presented. Stockbridge dampers effectively reduce vibrations by absorbing the energy supplied from the outside. In the real cases the power input comes from the wind. The efficiency of vibration damping is analyzed in the frequency domain corresponding to aeolian frequencies. Two-mass dampers were analyzed and their dynamic characteristics were presented and described by the power function in the frequency domain. The additional parameter - phase angle between excitation force and the velocity of the vibrating damper was presented as well.
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