Aeolian vibrations are the major cause for the failure of conductor cables. Using a Stockbridge damper reduces these vibrations and increases the life span of the conductor cable. Designing an efficient Stockbridge damper that suits the conductor cable requires a robust mathematical model with minimum assumptions. However it is not easy to analytically model the complex geometry of the messenger. Since, the messenger is a bunch of thin helical wires with nonlinear contact conditions. Therefore an equivalent stiffness must be determined so that it can be used in the analytical model. This paper examines the bending stiffness of the cable and discusses the effect of this stiffness on the natural frequencies. The obtained equivalent stiffness compensates for the assumption of modeling the messenger as a rod. The results from the free vibration analysis of the analytical model with the equivalent stiffness is validated using the full scale finite element model of the Stockbridge damper.
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ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 6–9, 2017
Cleveland, Ohio, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5822-6
PROCEEDINGS PAPER
Finite Element Modeling of Stockbridge Damper and Vibration Analysis: Equivalent Cable Stiffness Available to Purchase
Nitish Kumar Vaja,
Nitish Kumar Vaja
Central Michigan University, Mount Pleasant, MI
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Oumar Barry,
Oumar Barry
Central Michigan University, Mount Pleasant, MI
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Brian DeJong
Brian DeJong
Central Michigan University, Mount Pleasant, MI
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Nitish Kumar Vaja
Central Michigan University, Mount Pleasant, MI
Oumar Barry
Central Michigan University, Mount Pleasant, MI
Brian DeJong
Central Michigan University, Mount Pleasant, MI
Paper No:
DETC2017-68130, V008T12A012; 6 pages
Published Online:
November 3, 2017
Citation
Vaja, NK, Barry, O, & DeJong, B. "Finite Element Modeling of Stockbridge Damper and Vibration Analysis: Equivalent Cable Stiffness." Proceedings of the ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 8: 29th Conference on Mechanical Vibration and Noise. Cleveland, Ohio, USA. August 6–9, 2017. V008T12A012. ASME. https://doi.org/10.1115/DETC2017-68130
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