摘要
从磁流变液中存在的各种相互作用势出发，对Ｎ＝１００个球形羰基铁颗粒均匀分布于一正方形二维体系之中的物理模型，利用ＭｏｎｔｅＣａｒｌｏ方法和Ｍｅｔｒｏｐｌｉｓ算法着重计算了磁流变智能液的场致微结构变化。计算结果表明，磁流变液（ＭＲＦ）的流变效应在外磁场中的变化是由于其ＭＲＦ中磁性颗粒的成链团簇有序化所致。这与磁流变液在外磁场中熵的下降和对ＭＲＦ的光学显微镜观察结果是一致的。
ased upon the interaction potentials between ferromagnetic particles in magnetorheological fluids (MRF) and physical model containing monodisperse 100 carbonyl iron particles in a square, we theoretically investigates the influerce of magnetic field strength on aggregate structure of ferromagnetic particles in MRF. Our Monte Caro numerical Simulation results show that the changes of the magnetorheological effect of MRF in an applied magnetic field are due to the chainlike cluster of ferromagnetic particles in MRF. Our results are in agreement to the decrease of entropy of ferromagnetic particles of MRF in an applied magnetic field and ones observed optical microscope.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
1998年第3期411-415,共5页
Journal of Atomic and Molecular Physics
基金
军事电子预研基金
关键词
磁流变液
微观相互作用势
链状团簇
MC模拟
Magnetorheological fluids (MRF) Microscope interaction potential Monte Carlo Simulations Chainlike clusters Nanomagnetic particles
