Modelling and experimental investigation of a squeeze mode magnetorheological damper

Article type: Research Article

Authors: Meng, Fanxu^a | Zhou, Jin^a;

Affiliations: [a] College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China

Correspondence: [*] Corresponding author: Jin Zhou, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China. Tel.: +86 13913960672; E-mail: [email protected]

Abstract: In this paper, a novel mechanical model based on arc tangent function is established to accurately describe the hysteretic behavior of the squeeze mode Magnetorheological (MR) damper. An improved differential evolution (DE) algorithm, which can avoid the shortage of being easily trapped in a local extremum, is applied to identify the parameters of the model. The dynamical characteristic of the MR damper is experimentally investigated with the help of the MTS machine. The validity of the proposed model is confirmed from a good agreement between the simulations and measured data. In addition, comparative analysis of the simulations with two other existing models, reveals that the proposed model has a relatively high modelling accuracy with less parameters and explicit physical meaning.

Keywords: Magnetorheological damper, squeeze-mode, characteristic analysis, modeling, differential evolution algorithm

DOI: 10.3233/JAE-190008

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 61, no. 4, pp. 549-561, 2019