[1]许飞鸿,徐赵东,陈兵兵.磁流变液双链密排微结构模型[J].东南大学学报(自然科学版),2014,44(6):1206-1210.[doi:10.3969/j.issn.1001-0505.2014.06.020]
 Xu Feihong,Xu Zhaodong,Chen Bingbing.Compact two-column microstructure model of magnetorheological fluid[J].Journal of Southeast University (Natural Science Edition),2014,44(6):1206-1210.[doi:10.3969/j.issn.1001-0505.2014.06.020]
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磁流变液双链密排微结构模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第6期
页码:
1206-1210
栏目:
材料科学与工程
出版日期:
2014-11-20

文章信息/Info

Title:
Compact two-column microstructure model of magnetorheological fluid
作者:
许飞鸿徐赵东陈兵兵
东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Xu Feihong Xu Zhaodong Chen Bingbing
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
磁流变液 磁偶极子 剪切屈服应力 双链密排结构
Keywords:
magnetorheological fluid magnetic dipole yield shear stress compact two-column structure
分类号:
TU599
DOI:
10.3969/j.issn.1001-0505.2014.06.020
摘要:
为了揭示磁流变液宏观响应特性下的深层次物理背景,从而为研制高性能磁流变液提供指导,基于磁偶极子理论,结合铁磁颗粒的链化机理,提出了磁流变液双链密排微结构模型.在外加磁场下,当铁磁颗粒沿磁场方向形成链状结构后,通过考虑相邻链之间的影响,假定磁偶极子链发生剪切变形后的倾斜角度服从指数分布,从磁偶极子能量的角度推导了磁流变液双链密排微结构模型的剪切屈服应力公式.分析了磁感应强度、铁磁颗粒体积分数、铁磁颗粒尺寸以及颗粒包覆层厚度等主要影响因素与磁流变液剪切屈服应力的关系,并进行了试验验证.结果表明,该模型与试验结果吻合很好,可以反映各主要因素对磁流变液剪切屈服应力的影响.
Abstract:
In order to reveal the deep physical background of the macroscopic responses of the magnetorheological fluid, and thus provide a guidance for the development of high performance magnetorheological fluid, the compact two-column microstructure model of magnetorheological fluid is proposed considering the chain mechanism of ferromagnetic particles based on the magnetic dipole theory. Under the external magnetic field, the ferromagnetic particles form into the chain-like structure along the direction of magnetic field. The interactions between adjacent chains are considered, and it is assumed that the distribution of the chains obeys an exponential distribution. Finally, the yield shear stress formula is developed from the perspective of energy of the magnetic dipole, and the relationships between the yield shear stress and the main influencing factors, such as magnetic induction intensity, volume fraction, size and coating thickness of ferromagnetic particles, are also analyzed. These relationships are verified using the experimental data. The results show that the proposed model agrees well with the experimental data, and the model can reflect the influences of the main factors on shear yield stress.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-06-23.
作者简介: 许飞鸿(1989—),男,博士生;徐赵东(联系人),男,博士,教授,博士生导师,xuzhdgyq@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(11176008)、江苏省自然科学基金资助项目(BK20140025).
引用本文: 许飞鸿,徐赵东,陈兵兵.磁流变液双链密排微结构模型[J].东南大学学报:自然科学版,2014,44(6):1206-1210. [doi:10.3969/j.issn.1001-0505.2014.06.020]
更新日期/Last Update: 2014-11-20