Mechanical Model and Experimental Study of a Novel Magnetorheological Shear Thickening Damper

doi:10.3901/JME.2023.16.418

Abstract

Abstract: In order to meet the requirements of active and passive control characteristics of the damper, a magnetorheological shear thickening damper is proposed and designed based on the rheological mechanism of synergistic effect of magnetorheological shear thickening. The magnetorheological shear thickened fluid are prepared and their rheological properties of tested, and the apparent viscosity model is established based on the Cross model and the LM algorithm. A novel magnetorheological shear thickening damper（MRSTD） is designed and developed by the simulation and optimization of magnetic field circuit. Combined with the above research,the mechanical model of MRSTD is established, and the dynamic performance of its damping force is tested. The results show that under the active control of 110 mT magnetic field, the damper can increase the peak damping force by 34.3%. With the increase of oscillation frequency, the damping force can be increased by at least 64.2%. What’s more, the validity of the prediction of damping characteristics by the mechanical model is verified, and the maximum error is 8.9%.

Key words: magnetorheological shear thickening fliud（MRSTF）, smart damper, damping mechanical model, LM algorithm, structural design

CLC Number:

TH164

YANG Sanfeng, HUANG Xiangming, MING Yang, REN Yinghui. Mechanical Model and Experimental Study of a Novel Magnetorheological Shear Thickening Damper[J]. Journal of Mechanical Engineering, 2023, 59(16): 418-426.

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