Title: Dynamic characterisation of a vehicle magnetorheological shock absorber

Authors: Zekeriya Parlak; Tahsin Engin; Şevki Çeşmeci; İsmail Şahin

Addresses: Department of Mechanical Engineering, Sakarya University, 54187 Esentepe Campus, Sakarya, Turkey ' Department of Mechanical Engineering, Sakarya University, 54187 Esentepe Campus, Sakarya, Turkey ' Department of Mechanical Engineering, Sakarya University, 54187 Esentepe Campus, Sakarya, Turkey ' Vocational School of Akyazi, Sakarya University, Alagac Cad. Akyazi, 54405 Sakarya, Turkey

Abstract: Magnetorheological (MR) dampers have received remarkable attention due to being a potential technology to conduct semi-active control in mechanical systems in order to effectively suppress vibration. It is therefore important to understand the dynamic behaviour of such devices whose non-linear hysteresis is a complicated phenomenon. In the study, an MR damper has been designed, fabricated, tested and then its dynamic behaviour has been modelled with the classical Bouc-Wen hysteretic model. After that, the seven parameters of this model have been expressed in terms of only current excitation. By this, the total damping force has been given by a compact form in which the only independent variable is the current excitation. Finally, the model has been verified with experimental data and a good agreement has been observed.

Keywords: magnetorheological shock absorbers; MR devices; MR fluids; MR dampers; Bouc–Wen model; dynamic modelling; semi-active control; vibration supression; nonlinear hysteresis.

DOI: 10.1504/IJVD.2012.048690

International Journal of Vehicle Design, 2012 Vol.59 No.2/3, pp.129 - 146

Received: 18 Nov 2009
Accepted: 02 Apr 2010
Published online: 23 Apr 2013 *

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