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Title: Maximizing semi-active vibration isolation utilizing a magnetorheological damper with an inner bypass configuration

A single-degree-of-freedom (SDOF) semi-active vibration control system based on a magnetorheological (MR) damper with an inner bypass is investigated in this paper. The MR damper employing a pair of concentric tubes, between which the key structure, i.e., the inner bypass, is formed and MR fluids are energized, is designed to provide large dynamic range (i.e., ratio of field-on damping force to field-off damping force) and damping force range. The damping force performance of the MR damper is modeled using phenomenological model and verified by the experimental tests. In order to assess its feasibility and capability in vibration control systems, the mathematical model of a SDOF semi-active vibration control system based on the MR damper and skyhook control strategy is established. Using an MTS 244 hydraulic vibration exciter system and a dSPACE DS1103 real-time simulation system, experimental study for the SDOF semi-active vibration control system is also conducted. Simulation results are compared to experimental measurements.
Authors:
 [1] ; ;  [2]
  1. Department of Vehicle Engineering, Hefei University of Technology, Hefei 230009 (China)
  2. Department of Aerospace Engineering, University of Maryland, College Park, Maryland 20742 (United States)
Publication Date:
OSTI Identifier:
22410021
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BYPASSES; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; CONTROL SYSTEMS; DAMPING; DEGREES OF FREEDOM; DESIGN; FLUIDS; MAGNETISM; MATHEMATICAL MODELS; PERFORMANCE; RHEOLOGY; TUBES