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Abstract

This article presents the performance evaluation of two different bypass-type magneto-rheological (MR) shock dampers for high impulsive force systems, one of which is a single-ended damper and the other a double-ended one. First of all, MR shock dampers are designed and manufactured on the basis of the Bingham properties of MR fluid and the result of the magnetic field analysis for the magnetic circuit. After experimental investigations on both the magnetic field-dependent damping force and the response characteristics, the quasi-steady state models describing the dynamic behavior of the proposed dampers are formulated. Then, a simple one degree-of-freedom mass-drop system as a test bench for the MR shock dampers is constructed, and the simple and practical control algorithm is proposed in consideration of dynamic characteristics of the shock control system. Finally, in order to investigate their dynamic characteristics and control performances under shock condition, a comparison study is conducted through a series of experiments and simulations. The results show the controllability and adaptability of the proposed MR shock dampers for shock or impulsive force as well as the effectiveness of the proposed control algorithm.

Keywords

Bingham model bypass-type MR shock damper dynamic characteristic MR fluid shock isolation.

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Performance Evaluation of Two Different Bypass-type MR Shock Dampers

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