Research on Aeolian Vibration Fatigue Life of Conductors

DOI

10.2991/icmmse-17.2017.28How to use a DOI?

Keywords

Aeolian vibration, Nominal stress method, The energy balance method, Fracture mechanics method, Stockbridge-type damper.

Abstract

The transmission lines' fatigue failure caused by aeolian vibration is increasingly apparent as the wide applications of ultra-high voltage, so it is necessary to study the conductors' fatigue life of aeolian vibration. Different from the traditional infinite life design method and nominal stress method, the energy balance method is used to calculate the amplitude of the aeolian conductor vibration and fracture mechanics method is used to calculate the cycle times required for the fatigue failure of conductors. Based on the probability distribution theory of wind speed, the number of cycles of the aeolian vibration at a certain frequency is calculated. Then, the fatigue life of aeolian vibration is calculated combined with Miner linear damage theory. Comparing with the result of the nominal stress method, we can find that the nominal stress method is conservative. Finally, the fracture mechanics method is used to calculate the fatigue life of the conductor with Stockbridge-type dampers, which lays the foundation for the anti-vibration analysis of the aeolian vibration of conductors.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Li
AU  - Zuyan Zhang
AU  - Ningbo XU
PY  - 2017/04
DA  - 2017/04
TI  - Research on Aeolian Vibration Fatigue Life of Conductors
BT  - Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
PB  - Atlantis Press
SP  - 181
EP  - 189
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmse-17.2017.28
DO  - 10.2991/icmmse-17.2017.28
ID  - Li2017/04
ER  -