Volume 16, Issue 10 (1-2017)                   Modares Mechanical Engineering 2017, 16(10): 412-420 | Back to browse issues page

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Minaei M, Sadeghi M. Parameter Estimation of Stockbridge Damper and Studying its Energy Absorption Using Model Updating Method and Experimental Modal Analysis. Modares Mechanical Engineering 2017; 16 (10) :412-420
URL: http://mme.modares.ac.ir/article-15-6759-en.html
Abstract:   (4457 Views)
In transmission lines the environmental disturbances causes vibration of the lines (cables) as well as the structure which have destructive effect on the line and its components. To overcome this harmful effect, it seems necessary to reduce the transmission line vibration level. One of the most frequent methods for reducing the transverse vibration of cables is using dynamical dampers such as Stockbridge damper. Complication of calculating the bending stiffness as well as the energy absorption mechanism of these dampers makes it more difficult to be modeled. In this study the dynamical characteristics of Stockbridge damper considering the damping effect are studied. For system identification of Stockbridge damper, it is modeled as a 4DOF system and its various unknown parameters are obtained using model updating method and experimental modal analysis (EMA) which is optimized by Artificial Intelligence (AI) method. Then the effects of varying these parameters on its energy absorption are discussed. Finally, to validate the analytical results, some experimental tests were carried out on the energy absorption of Stockbridge damper. The analytical results are in good agreement with the experiments.
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Article Type: Research Article | Subject: Vibration
Received: 2016/07/18 | Accepted: 2016/09/25 | Published: 2016/10/22

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