Design and modeling of an innovative magnetorheological fluid-elastomeric damper with compact structure

Abstract

The aim of the present work is to propose an innovative magnetorheological fluid-elastomeric damper which is applied to small amplitude vibration reduction occasions, especially for helicopter rotor. The damper is compact in structure and possesses the controllable dynamic characteristics. The magnetic circuit structure of the damper is designed and optimized emphatically in order to ensure its rationality. After the completion of the prototype, the damper is tested by a hydraulically actuated dynamic testing system under different excitation amplitudes, excitation frequencies, and input currents. Subsequently, a new phenomenological model is established to describe the nonlinear behavior of the proposed magnetorheological fluid-elastomeric damper. A series of parameter identification is conducted to fit both this model and Bouc–Wen model to experimental data for the purpose of verifying the accuracy of the established model.

Shaking Table Attached to Magnetorheological Damper: Simulation and Experiments for Structural Engineering

“…The Bouc–Wen model has no physical meaning; however, the Bouc–Wen model describes hysteresis, and hysteresis is the phenomenon that drives MR dampers. This assertion finds evidence in many experiments performed over the last two decades; see [ 3 , 17 , 34 , 35 , 36 , 37 , 38 , 39 ] for a brief account. These investigations suggest that the Bouc–Wen model represents the hysteresis behavior of MR dampers.…”

Modeling free Inversion based Iterative Feedforward Control of Magnetorheological Dampers

“…Modeling of MR damper can be roughly classified into parametric and nonparametric models. The parametric models include Bouc-Wen model [5,6], phenomenological model [7,8], and Dahl model [9], etc. Normally, an inverse model is chosen as feedforward controller of an MR damper [10][11][12] in order to obtain the required current in terms of the desired damping force and piston motion state [10,11].…”

An Automotive Ferrofluidic Electromagnetic System for Energy Harvesting and Adaptive Damping

“…Many applications are used to achieve the most exaggerated way of creating a damping force in different types and operation modes, but hydraulic dampers are the most common [ 9 ]. This is because of their suitability for working with higher amplitudes and compact geometric shapes [ 10 ]. Hydraulic dampers transform vibration energy to heat and dissipate it out to the surroundings.…”