Performance prediction of magnetorheological valves under various type of fluid and flux path

Muhammad Hafiz Idris,Saiful Amri Mazlan,Fitrian Imaduddin,Ubaidillah Ubaidillah

doi:10.1051/matecconf/201815902016

Abstract

Magnetorheological (MR) valve is one of the key components in regulating the control flow of MR fluid flow in MR devices. Due to MR rheological properties enabling magnetic modifications, many MR valve designs have been introduced and are widely utilized in MR devices. The main objective of this article is to compare the pressure drop generated by each types of MR valves. Five different configurations of MR valves were analyzed in this study. To provide a fair comparison, several parameters were fixed; which is the size of the MR valves, gap size, number of coil turns and power consumption. In order to demonstrate the MR valve performance, the pressure drops were calculated based on the mathematical equations derived from MR valve models and the magnetic fields derived from finite element method based software. The results of the simulations were compared to each type of MR valve and, then, discussed.

Highlights

Applications and devices utilizing magnetorheological fluids (MRFs) are experiencing a rise due to the property uniqueness of magnetic controllable and fastresponse rheological change with the magnetic field
MRF is a type of smart material where the viscosity of the fluid increases when the magnetic field increases[1]
The pressure drop of the MR valve rises with the raising of the magnetic field strength

Summary

Introduction

Applications and devices utilizing magnetorheological fluids (MRFs) are experiencing a rise due to the property uniqueness of magnetic controllable and fastresponse rheological change with the magnetic field. For the radial gaps, the fluid flows transversely in a radial manner, forcing the fluid to flow in perpendicular to the inlet and outlet of the valve These two gap types, annular and radial, are the most commonly and widely used in studies. One study reported a methodology in configuring and comparing different MR valve configurations using analytical models and Finite Element Analysis [FEA] [10]. This type of analysis is remarkably time consuming with various processes involved in the evaluation to determine the most suitable design for a particular application. The analysis serves as a basis in selecting or designing tool for MR valves

MR valve modelling

Pressure drop generated by MR valve

Conclusion