含单轴铁磁颗粒弹性体的磁流变效应
Magnetorheological effect in elastomers containing uniaxial ferromagnetic particles
摘要：
提出了磁活性弹性体在磁场作用下的集体磁流变效应的描述。在弹性体中的磁单轴铁磁颗粒在其磁化时所受力的磁矩和机械力矩之间使用一致性条件。研究表明，即使在颗粒浓度很小的情况下，磁致剪切的值也可以非常大，高达百分之几十。当磁场沿磁致弹性体的易磁化轴方向时，磁致弹性体的变形可以临界地演变为二级相变。
英文摘要：
The description of the collective magnetorheological effect induced by magnetic field in magnetoactive elastomers is proposed. The condition of consistency is used between magnetic and mechanic momenta of forces exerted on magnetically uniaxial ferromagnetic particles in elastomer at their magnetization. The study shows that even in the case of small concentration of particles, the value of magnetically-induced shear can be anomalously large, reaching up to tens of percent. The deformation of magnetoactive elastomer can evolve critically, as a second-order phase transition, if magnetic field is aligned along the easy axis of particles.
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