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27 March 2019 Design and analysis of a shock absorber with both tunable inertance and damping
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Abstract
Based on the concept of “functional integration”, a novel integrated semi-active shock absorber with a magnetorheological (MR) inerter with tunable inertance, a MR damper with tunable damping and a coil spring, is proposed and investigated in this paper. The MR inerter mainly consists of a MR clutch, a ball-screw set, a flywheel, excitation coils and MR fluids. Inertance adjustment of the MR inerter can be realized through control of the duty cycle of the excitation current by pulse width modulation (PWM). The dynamic models of the semi-active shock absorber and the MR inerter are established based on MATLAB/SimMechanics, and the mechanical characteristics of the two are simulated. Moreover, the effectiveness of the PWM control for the inertance adjustment is verified. The mechanical behaviors of the semi-active shock absorber with different inertances and damping coefficients are obtained and analyzed.
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An-Ding Zhu, Wei-Min Zhong, and Xian-Xu Bai "Design and analysis of a shock absorber with both tunable inertance and damping", Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 109701U (27 March 2019); https://doi.org/10.1117/12.2513366
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