摘要
本文考虑了磁流变弹性体(MR弹性体)内颗粒与基体间磁场的相互影响,基于均匀化理论计算磁流变弹性体的磁致剪切模量,并与已有磁偶极子理论的解进行对比分析。结果表明,铁磁颗粒磁导率的变化对磁致剪切模量的影响不大;当颗粒体积分数为30%时,基于均匀化理论获得的磁致剪切模量呈现最大值,其整体变化规律与实验数据基本吻合,可预测磁致剪切模量最大时的颗粒体积分数;而基于磁偶极子理论的计算结果与实验数据有一定差距。
Considering the mutual influence of magnetic field between the particles and the matrix in magnetorheological elastomers（MR elastomers）, the magnetic shear modulus of MR elastomers was calculated based on homogenization theory. As compared with those from the magnetic dipole theory, the calculation results show that： the change of magnetic permeability of ferromagnetic particles has little effect on the magnetic shear modulus; when the volume fraction of particles is 30%, magnetic shear modulus obtained by homogenization theory reaches the maximum value, and the whole variation law agrees well with experimental data, it can be predicted when magnetic shear modulus gets the largest; but the calculated results based on the magnetic dipole theory have some deviation from the experimental data. This work can provide guidance and reference for the production of magnetorheological elastomers as well as the analysis of magneto-mechanical properties.
作者
李健
周岭
王省哲
王海明
LI Jian;ZHOU Ling;WANG Shengzhe;WANG Haiming(College of Mechanical and Electronic Engineering,Tarim University,A laer 843300,China;School of Civil Engineering and Mechanics,LanZhou University,Lanzhou 730000,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2018年第5期829-833,共5页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(11172117)
塔里木大学校长基金青年创新资金专项资助项目(TDZKQN201609)
关键词
磁致剪切模量
均匀化
磁偶极子
磁流变弹性体
magnetic shear modulus
homogenization
magnetic dipole
magnetorheological elastomers
