摘要
作为磁偶极流体系统,磁流变液丰富的微结构形态及构成这些微结构的基本胞元决定了磁流变液在磁场-力场作用下的磁流变效应。对外加静磁场下具有单链、多链密排、正方、面心立方和体心立方胞元的微结构系统的磁势能进行了分析,结果表明具有体心立方胞元的微结构的平均磁势能较低,而具有正方胞元的微结构的平均磁势能较高。基于最小势能原理可知,静磁场下磁流变液中的颗粒容易形成具有体心立方胞元和多链密排胞元的微结构。
The magnetorheological effect of magnetorheological fluids （MRFs） under magnetic-mechanical tields is determined by its microstructures. The magnetic energy of typical microstructures of dipolar particles in a static magnetic field is analyzed. It shows that, among the microstructures composed respectively of single-column, compact two-column, compact three-column, cubic-lattice, bct and fce cells, the average magnetic potential energy of the mierostructure with cubic-lattice cells is the highest and that with BCT cells is the lowest. It indicates that the mierostructures composed of BCT cells and compact multi-column cells are the most possible microstructures in MRFs under static magnetic fields.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2008年第12期1961-1964,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(10472135)
关键词
磁流变液
微结构
稳定性
数值模拟
magnetorheological fluids
microstructure
stability
numerical analysis
