چکیده مقاله
Magnetorheological MR fluid dampers are semi active control devices that have developed widespread application in recent years to mitigate the dynamic vibrations of structures subjected to earthquakes This study uses MR dampers to reduce the responses of a three story benchmark steel building under four benchmark earthquake excitations To decrease the time, cost, and computational effort, an optimized linear shear type model of the three story benchmark steel building is estimated using a Genetic Algorithm, demonstrating acceptable accuracy compared to its finite element model in frequency and time history analysis A modified Bouc Wen model describes the dynamics of the MR damper actuator, and the damper's saturation is also considered The damper's performance in reducing structural responses under earthquakes is evaluated under passive off, passive on, and fuzzy logic control algorithm strategies The fuzzy logic controller determines the input voltage applied to the damper, which regulates the damper's control force to be effectively applied to the building The reduction in displacement, absolute acceleration of the roof, and inter story drifts of the building under benchmark earthquakes are investigated using the MR damper under the specified control strategies The results confirm the effectiveness of the MR damper in mitigating the structural responses under seismic excitations
کلیدواژهها
نویسندگان
مازیار فهیمی فرزام
Associate Professor, Department of Civil Engineering, University of Maragheh, Maragheh, Iran
Mohammad Salehi
M Sc in Structural Engineering, Department of Civil Engineering, University of Maragheh, Maragheh, Iran
Mozhgan Fahimi
B Sc in Civil Engineering, Graduated Student from the Mirdamad Institute of Higher Education, Gorgan, Iran
شیوه ارجاع
Fahimi Farzam, Maziar and Salehi, Mohammad and Fahimi, Mozhgan,1404,Seismic Assessment of Controlled Optimum Benchmark Steel Structure Using Magnetorheological Damper,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران