Modeling of the Magnetorheological Damper with Optimization Approach for Magnetic Fluid Molecular Properties

Document Type : Research Article

Authors

1 PhD student of mechanical engineering, Shahrood university of technology

2 Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran

3 Associated professor of mechanical engineering, Shahrood university of technology

Abstract

Magnetorheological damper, as one of the most widely used equipment in various industries, was firstly studied and optimized using a molecular properties analysis of operating magnetic fluid in it utilizing dissipative particle dynamics as molecular modeling method. By using modified Bouc-Wen model, hysteresis and damping force level have calculated in order to provide the required 10 N power requirement in micro-machines and after validation with experimental results presented in papers, the effect of molecular properties of magnetic fluid operating on it has investigated. Results of molecular modeling by dissipative particle dynamics method show that by increasing mass and diameter of magnetic particles, damping force increases, while by increasing number density of these particles and increasing mass of carrier fluid particles, damping force firstly increases and then decreases. Therefore, it is necessary to set optimal values. It is also observed that by decreasing the thickness of the surfactant layer at the surface of the magnetic particles, damping force increases. Finally, according to the obtained results, the optimal values of each studied parameters were determined to provide 10 N damping force with the least amount of energy consumed by damper and selected from commercial magnetic fluids 132-DG fluid as suitable magnetorheological fluid.

Keywords

Main Subjects


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