| 제목 |
자기회로 기반 MR 댐퍼 설계 변수 반응속도 및 감쇠력 케이스 스터디 |
| 분야 |
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| 언어 |
Korean |
| 저자 |
이동훈(Kongju National University), 김보규(Kongju National University), 오종석(Kongju National University), 정도현(Kongju National University) |
| Key Words |
Magnetorheological Fluid (자기유변유체), MR Damper(자기유변유체 댐퍼), Response Time (반응속도), Damping Force (감쇠력), Eddy Current (와전류) |
| 초록 |
This study proposes a newly designed magnetorheological (MR) damper capable of delivering the required damping force under various operating conditions with millisecond-level response time. A case study considering multiple design variables was conducted to optimize both response speed and damping performance. Among the key factors affecting the response time, the eddy current phenomenon was identified as a major cause of electromagnetic delay. To mitigate this, a novel design concept was introduced that increases the current path resistance by incorporating grooves into the core housing. Various groove geometries were analyzed to assess their influence on damping force and response time. The results showed that the grooves improved response speed but also led to reduced magnetic field intensity, thereby lowering the damping force. Additionally, the effect of the number of cores on groove efficiency was examined, and soft magnetic composites (SMCs) were identified as optimal core materials for minimizing eddy currents. Simulation results confirmed the effectiveness of the proposed groove-based design in enhancing response speed, with diminishing returns observed as the number of cores increased. This research presents a systematic approach to overcoming eddy current-induced delay and provides a foundation for future studies involving magnetic hysteresis modeling to further improve response accuracy. |
| 원문(PDF) |
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