Dynamic Characterization of MR Damper and Experimental Adjustment of Numerical Model
In this present work, we analyze through the hysteresis loops the modified Bouc-Wen model performance governing the internal dynamics of a Magneto-Rheological (MR) damper. The analysis of the energy dissipated per cycle of vibration is made by a MR damper
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Abstract In this present work, we analyze through the hysteresis loops the modified Bouc-Wen model performance governing the internal dynamics of a Magneto-Rheological (MR) damper. The analysis of the energy dissipated per cycle of vibration is made by a MR damper dynamic characterization on a dynamic testing machine in order to examine the effect of the frequency, the amplitude of the displacement and of the excitation current on the dissipated energy and therefore the equivalent damping coefficient. The dynamic responses of the modified Bouc-Wen numerical model will be compared with experimental responses and then recalibrated on the latter, while performing an adjustment of the influence parameters model.
Keywords MR damper Dynamic characterization Modified Bouc-Wen model Hysteresis curve Dissipated energy Control law
1 Introduction Magneto-rheological dampers (MR) are subject in recent years of special attention because of their characteristics including mechanical simplicity, high dynamic range, low power, high capacity power and robustness. However, and early 2000s, researchers began to consider the development and use of these dampers in several areas, especially where other technologies have begun to emerge to make their practical use possible. Microprocessors, sensors and controllers to increase the processing speed control have created opportunities that did not exist before. S. Boukerroum (&) USTHB/FGMGP, LMA, BP 32, El Allia, 16111 Bab Ezouar, Alger, Algeria e-mail: [email protected] N. Hamzaoui INSA de Lyon, LVA, Bâtiment a de St. Exupéry, 25 bis avenue Jean Capelle, 69621 Villeurbanne, France e-mail: [email protected] © Springer International Publishing Switzerland 2017 T. Boukharouba et al. (eds.), Applied Mechanics, Behavior of Materials, and Engineering Systems, Lecture Notes in Mechanical Engineering, DOI 10.1007/978-3-319-41468-3_27
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S. Boukerroum and N. Hamzaoui
A large range of use of MR dampers allowed the researchers to improve their performance, focusing their internal dynamics. Indeed several mathematical models highlighting the physical and energy characteristics (electric current, magnetic fields, flow, viscosity) of fluids MR, have enabled the development of several digital models governing the internal dynamics of these dampers such as models of Bingham, Gamota and Filisko, Bouc-Wen and modified Bouc-Wen [1]. To validate the performance of these models, researchers are mostly oriented to experimental studies often very complex and expensive, whose interest is to adjust these models. In order to have a model of the MR damper more representative, may substitute for experimentation in other developments and analyzes schemes and control laws, it is necessary to validate it through confrontation “computing-test” to better analyze response times and allow to perform recalibration (adjusting), the main objective of this confrontation for a better representation of the digital model [2].
2 Magneto Rheological Damper The RD-1005-3 (Fig. 1), is a small, compac
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