Magnetic Field Analysis of the Actuator in a Semi-Active Vibration Control of the Beam with MR Fluid

Abstract

In this study the analysis of the magnetic field distribution of an electromagnet is presented. This electromagnet is used as an actuator in a semi-active vibration control of the three-layer beam with MR fluid. Two separate numerical methods are used for the purpose of calculating the magnetic field distribution. The first method is based on the Finite Element Method and implemented using ANSYS software. The second, simplified one is based on the assumption that the electromagnet can be substituted by a simple magnetic circuit divided into separate paths, with each sub-path defined by the value of reluctance of the corresponding electromagnet part. The comparison of the results from both methods with the ones obtained from an experiment is also presented and analyzed in the paper.

Stiffness and damping characteristics of MR fluid-based sandwich beams: experimental study

“…The present study summarises experimental investigation of four sandwich beams filled with MRFs (two fully and two partially filled beams). In the present study, the authors employ a newly designed electromagnet (Romaszko and Lacny, 2015). Besides, the end of each beam is clamped in a holder placed at the moving part of the electrodynamic shaker.…”