Preisach 모델을 이용한 MR 유체의 히스테리시스 특성 고찰

Hysterisis Investigation of Magnetorheological Fluid Using Preisach Model

  • 한영민 (인하대학교 대학원 기계공학과) ;
  • 임계현 (인하대학교 대학원 기계공학과) ;
  • 최승복 (인하대학교 기계공학부)
  • 발행 : 2005.05.01

초록

This paper presents a new approach for hysteresis modeling of a magnetorheological (MR) fluid. The field-dependent hysteresis of MR fluid is investigated using the Preisach model. The commercial MR Product (MRF-132LD, Lord Corporation) is employed. Its field-dependent shear stress is then obtained using a rheometer (MCR 300, Physica). In order to show the applicability of the Preisach model to the MR fluid, two significant Properties; the minor loop property and the wiping-out property are experimentally examined. Subsequently, the Preisach model for the MR fluid is identified using experimental first order descending (FOD) curves in discrete manner. The effectiveness of the identified hysteresis model is verified in the time domain by comparing the predicted field-dependent shear stress with the measured one. In addition, the hysteresis model proposed in this work is compared to Bingham model.

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