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Smart Structures and Systems Volume 15, Number 6, June 2015 , pages 1481-1501 DOI: https://doi.org/10.12989/sss.2015.15.6.1481 |
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Experimental study of controllable MR-TLCD applied to the mitigation of structure vibration |
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Chih-Wen Cheng, Hsien Hua Leeand Yuan-Tzuo Luo
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| Abstract | ||
| MR-TLCD (Magneto-Rheological Tuned Liquid Column Damper) is a new developed vibration control device, which combines the traditional passive control property with active controllability advantage. Based on traditional TLCD governing equation, this study further considers MR-fluid viscosity in the equation and by transforming the non-linear damping term into an equivalent linear damping, a solution can be obtained. In order to find a countable set of parameters for the design of the MR-TLCD system and also to realize its applicability to structures, a series of experimental test were designed and carried out. The testing programs include the basic material properties of the MR-fluid, the damping ratio of a MR-TLCD and the dynamic responses for a frame structure equipped with the MR-TLCD system subjected to strong ground excitations. In both the analytical and experimental results of this study, it is found that the accurately tuned MR-TLCD system could effectively reduce the dynamic response of a structural system. | ||
| Key Words | ||
| MR-TLCD; viscosity of MR-fluid; vibration mitigation; shaking-table testing on TLCD; magnetic power control | ||
| Address | ||
| Chih-Wen Cheng, Hsien Hua Leeand Yuan-Tzuo Luo: Department of Marine Environment and Engineering, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan, R.O.C. | ||