Lopez-Lopez M T, Borin D Yu, Zubarev A Yu
Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva, 18071 Granada, Spain.
Instituto de Investigación Biosantaria de Granada, 18014 Granada, Spain.
Phys Rev E. 2017 Aug;96(2-1):022605. doi: 10.1103/PhysRevE.96.022605. Epub 2017 Aug 7.
The paper deals with a theoretical study of the effective shear modulus of a magnetic gel, consisting of magnetizable particles randomly and isotropically distributed in an elastic matrix. The effect of an external magnetic field on the composite modulus is the focus of our consideration. We take into account that magnetic interaction between the particles can induce their spatial rearrangement and lead to internal anisotropy of the system. Our results show that, if this magnetically induced anisotropy is insignificant, the applied field reduces the total shear modulus of the composite. Strong anisotropy can qualitatively change the magnetomechanic effect and induce an increase of this modulus with the field.
本文研究了一种磁性凝胶有效剪切模量的理论，该凝胶由可磁化颗粒随机且各向同性地分布在弹性基质中组成。外部磁场对复合模量的影响是我们考虑的重点。我们考虑到颗粒之间的磁相互作用会引起它们的空间重排，并导致系统的内部各向异性。我们的结果表明，如果这种磁致各向异性不显著，外加磁场会降低复合材料的总剪切模量。强各向异性会定性地改变磁机械效应，并导致该模量随磁场增加。
