Abstract
Based on the Bingham parallel-plate model, a simplified design method of shear-valve magnetorheological (MR) dampers is proposed considering the magnetic circuit optimization. Correspondingly, a new MR damper with a full-length effective damping path is proposed. The prototype dampers are also fabricated and studied numerically and experimentally. According to the test results, the Bingham parallel-plate model is further modified to obtain a damping force prediction model of the proposed MR dampers. This prediction model considers the magnetic saturation phenomenon. The study indicates that the proposed simplified design method is simple, effective and reliable. The maximum damping force of the proposed MR dampers with a full-length effective damping path is at least twice as large as those of conventional MR dampers. The dynamic range of damping force increases by at least 70%. The proposed damping force prediction model considers the magnetic saturation phenomenon and it can realize the actual characteristic of MR fluids. The model is able to predict the actual damping force of MR dampers precisely.
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Supported by: The National Basic Research Program of China (973 Program) under Grant No. 2011CB013606, the Major Research Plan of the National Natural Science Foundation of China under Grant No. 91315301-06, the National Natural Science Foundation of China under Grant No. 51378343, the Natural Science Foundation of Tianjin, China under Grant No. 13JCZDJC35200, and the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No. 20110032110042
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Ding, Y., Zhang, L., Zhu, H. et al. Simplified design method for shear-valve magnetorheological dampers. Earthq. Eng. Eng. Vib. 13, 637–652 (2014). https://doi.org/10.1007/s11803-014-0269-2
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DOI: https://doi.org/10.1007/s11803-014-0269-2