영구자석을 이용한 MR fluid 댐퍼의 형상 최적 설계 및 감쇠력 특성 분석 = Optimal Shape Design and Damping Force Characterization of an MR Fluid Damper Using Permanent Magnets

다국어 초록 (Multilingual Abstract)

In this study, the structural desig n of an MR fluid damper for use in electromagnetic suspension systems was investigated, focusing on achieving effective damping force generation without external magnetic excitation through the integration of permanent magnets. A damping force formulation was first derived to clarify the relationship between magnetic field intensity and damping characteristics, and the magnetic flux distribution and baseline performance of the initial damper model were evaluated. Shape optimization of the damper geometry was subsequently performed using PIAnO (Process Integration, Automation and Optimization), enabling systematic parameter variation and performance assessment within a PIDO framework.
Electromagnetic analysis of the optimized configuration was then conducted using ANSYS Maxwell to determine the resulting magnetic flux density and maximum attainable damping force. Additionally, the damping response was examined with respect to piston position and operating velocity to evaluate force controllability and stability.
The results demonstrate that the proposed permanent-magnet-based shear-mode MR damper configuration can provide substantial damping capability without external coil-driven magnetic input, offering potential benefits including reduced power consumption, structural simplicity, and enhanced reliability. This work provides a foundation for the development of passive or semi-active MR damping systems incorporating permanent magnet actuation in future electromagnetic suspension applications.