Magnetostatic simulation in a novel magnetorheological elastomer based loudspeaker surround
Kusuma Arum Dyana Kumara , Ubaidillah, Iwan Yahya , Gigih Priyandoko, Wibowo

Universitas sebelas maret, Universitas Widyagama

Abstract

This article delivers the application of magnetorheological elastomers (MREs) as a variable stiffness of surround in a loudspeaker. Firstly, the existing surround was replaced by a set of variable stiffness absorber featuring an MREs. In the preliminary stage, the magnetic circuit absorber was evaluated through simulation work. Then, the simulation using the finite element method magnetic (FEMM) was con- ducted to predict the performance of MREs. The applied currents were varied from 0 to 1.5 A with an interval of 0.25 A. Later, the average magnetic flux density obtained from the simulation was used for estimating shear storage modulus and shear loss modulus which taken from actual experimental data. The stiffness obtained by processing shear storage modulus and shear loss modulus with analytical calculation method. Therefore, the performance of MREs could be evaluated. The suspension system MREs which has investigated have good performance, i.e., has a wide range of stiffness.

Keywords: magnetorheological elastomers, loudspeaker surround, finite element method, stiffness prediction

Topic: EV System and Integration

Link: https://ifory.id/abstract-plain/MmRbWFY6CzZA

Web Format | Corresponding Author (Kusuma Arum Dyana Kumara)