Magnetic induction measurements and identification of the permeability of Magneto-Rheological Elastomers using finite element simulations
Magnetic induction measurements and identification of the permeability of Magneto-Rheological Elastomers using finite element simulations
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DOI：
10.1016/j.jmmm.2015.12.003
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发表时间：
2016-04-15
影响因子：
2.7
通讯作者：
Harrison, Philip
中科院分区：
文献类型：
--
作者：
Schubert, Gerlind;Harrison, Philip
利用一种简单的逆模型方法确定了磁流变弹性体（MRE）的各向同性和各向异性磁导率。这涉及到测量磁通量密度和磁铁之间发生的吸引力，当磁共振样品放置在磁铁之间。使用具有10-40%颗粒体积浓度的各向同性MRE和具有10- 30%颗粒体积浓度的各向异性MRE进行测试。然后，通过使用商业上可获得的多物理场有限元软件模拟系统，通过逆建模来确定磁导率。正如预期的那样，发现各向同性MRE的有效渗透率是标量值;随着颗粒体积浓度的增加而增加（从10%时的约1.6增加到30%时的3.7）。横向各向同性MRE的磁导率本身被发现是横向各向同性的，在颗粒链排列的方向上的磁导率从10%时的1.6到30%时的4.45，这比在横向方向上的磁导率高1.07-1.25倍。这项调查的结果表明，显示出良好的协议与文献报道的。(C)2015年，作者。由爱思唯尔公司出版
The isotropic and anisotropic magnetic permeability of Magneto-Rheological Elastomers (MREs) is identified using a simple inverse modelling approach. This involves measuring the magnetic flux density and attractive force occurring between magnets, when MRE specimens are placed in between the magnets. Tests were conducted using isotropic MREs with 10-40% and for anisotropic MREs with 10-30%, particle volume concentration. Magnetic permeabilities were then identified through inverse modelling, by simulating the system using commercially available multi-physics finite element software. As expected, the effective permeability of isotropic MREs was found to be scalar-valued; increasing with increasing particle volume concentration (from about 1.6 at 10% to 3.7 at 30% particle volume concentration). The magnetic permeability of transversely isotropic MRE was itself found to be transversely isotropic, with permeabilities in the direction of particle chain alignment from 1.6 at 10% to 4.45 at 30%, which is up to 1.07-1.25 times higher than in the transverse directions. Results of this investigation are demonstrated to show good agreement with those reported in the literature. (C) 2015 The Authors. Published by Elsevier B.V.