Responses of isolated building with MR Dampers and Fuzzy Logic
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Responses of isolated building with MR Dampers and Fuzzy Logic
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Responses of isolated building with MR Dampers and Fuzzy Logic

Author: F. Khoshnoudian , A. Molavi-Tabriz | Size: 0.5 MB | Format: PDF | Quality: Unspecified | Publisher: International Journal of Civil Engineering, Vol. 10, No. 3, September 2012 | Year: 2010 | pages: 10


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The application of fuzzy algorithms in the response control of a base isolated building with MR dampers is investigated in this paper. Most of the previous researches in this field have been focused on fuzzy algorithms with linear membership function however in the current study; the membership functions are assumed to be Gaussian and their effectiveness is studied. For this purpose, an eight-story building with regularity in plan and height is considered. The adopted base isolation system includes linear bearings and control devices for improving the behavior of isolated structure under near field ground motions. MR dampers are used to reduce base displacements and have the capacity of 1000 kN with the maximum applied voltage of 10 V. In order to verify the control procedure and analyzing the structure, a simulation procedure is developed. This procedure performs linear analysis of the structure in presence or in absence of the base isolation system. Moreover, the simulation procedure is able to appropriately determine the MR damper voltage using fuzzy logic algorithms and then analyzing the whole system too. Finally, seven near-field earthquake records are chosen in order to study the structure responses under these records and the obtained results demonstrate the accuracy of proposed control procedure.


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