磁流变弹性体中颗粒磁场力受到颗粒磁化率、颗粒结构以及颗粒间的饱和磁场强度等因素影响。利用磁路分析的原理,讨论了由磁化材料和非磁化材料组成的一段磁路的特性,在考虑颗粒结构的基础上建立了磁流变弹性体局部磁场的颗粒分析单元,推导得到了颗粒的磁化强度表达式。在对颗粒磁化强度过程简化的基础上,进一步导出计算颗粒磁场力的计算公式。
When magnetic force between the particles in magnetorheological elastomers is estimated,the effects of the interactions of particle magnetization,particle structure and saturation of magnetization should be taken into account.In this paper,aparticle unit model has been proposed for analyzing the local magnetic field of magnetorheological elastomers,which are composed by magnetic particles and non-magnetic polymer matrix,based on the principle of magnetism.The magnetization of particles is simplified based on the analysis of the particle unit,and a simple analytic formula for the magnetic force between the particles in magnetorheological elastomers has been obtained.