Performance requirements for vibration dampers |
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| Affiliation: | 1. School of Natural and Built Environment, Queen''s University Belfast, University Rd, Belfast BT7 1NN, UK;2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong;3. School of Engineering, National University of Ireland Galway, University Rd, Galway, Ireland;1. Dr.-Ing. h.c. F. Porsche AG, Transmission Development, 71287 Weissach, Germany;2. Karlsruhe Institute of Technology, Institute of Engineering Mechanics, 76131 Karlsruhe, Germany;1. High Performance Computing Institute & ESI Group Chair, Ecole Centrale Nantes, 1 rue de la Noe, 44300 Nantes, France;2. LMT, ENS Paris-Saclay, 61 Avenue du Président Wilson, 94235 Cachan cedex, France;3. I3A, University of Zaragoza, Maria de Luna S/N, 50018 Zaragoza, Spain |
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| Abstract: | An analysis method introduced in a recent paper has been applied to four ACSR conductors. Calculations are carried out to further illustrate the method, showing the relationship between wind energy input to the conductor and energy loss from the conductor when it is vibrating at a constant loop velocity equal to 200 mm/s. The difference between the two energy curves defines an energy gap or shortfall that must be supplied by vibration dampers. This energy gap is seen to depend strongly on the conductor tension, the conductor diameter, and the conductor span length. An illustration is given showing how well a Stockbridge damper or an impact damper fills the energy gap. One additional illustration is given applying the same principles to a triple-conductor bundle and an impact type of damping spacer. Finally, field tests conducted earlier on the four sample conductors are compared with the calculated results. |
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