Research on Calculation of Equivalent Damping Ratio of Electrical Transmission Tower-Line System with Viscoelastic Dampers

Cong Zeng; Dong Xue Hao; Li Qun Hou

doi:10.4028/www.scientific.net/AMR.1064.115

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1064Research on Calculation of Equivalent Damping...

Research on Calculation of Equivalent Damping Ratio of Electrical Transmission Tower-Line System with Viscoelastic Dampers

Abstract:

Installing viscoelastic dampers on electrical transmission tower will significantly reduce the wind-induced vibration response of electrical transmission tower-line system. On the basis of the concept of strain energy method with the combination of related codes and the theories of calculation for equivalent damping,a mothed is presented which is used to estimate the additional damping of electrical transmission tower-line system with viscoelastic dampers.Through a electrical transmission tower with viscoelastic dampers, based on the formula of strain energy in design code,this paper puts forward a calculation method of equivalent damping ratio based on the concept story of transmission tower,and through finite element model the responses of transmission tower with viscoelastic dampers model and the one with additional damping ratio model were compared.The simulation results show that the calculation method of equivalent damping ratio has high precision,and the errors are less than 5% in multi engineering conditions.

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Periodical:

Advanced Materials Research (Volume 1064)

Pages:

115-119

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1064.115

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Online since:

December 2014

Authors:

Cong Zeng, Dong Xue Hao, Li Qun Hou

Keywords:

Additional Equivalent Damping Ratio, Electrical Transmission Tower-Line System, Viscoelastic Damper

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