The constitutive model of magnetorheological fluid in the squeeze-shear composite mode

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Magnetism and Magnetic Materials Pub Date : 2025-01-30 DOI:10.1016/j.jmmm.2025.172838

Lu Xiao , Fei Chen , Xianfei Yin , Aimin Li , Shuyou Wang , Haopeng Li

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Abstract

The squeeze strengthening effect can significantly enhance the yield stress of magnetorheological(MR) fluids. However, the existing classical dipole model cannot accurately describe the microstructure of MR fluids under the squeeze-shear composite mode, and the constitutive model of yield stress under the composite mode is lacking. In this paper, the classical dipole method, finite element method, and magnetic energy analysis are used to analyze the interaction between particles in the squeeze-shear composite mode, and a fusion dipole model is proposed. A mathematical model of the magnetic energy density of the particle chain under the combined magnetic field and squeeze was established by analyzing the characteristics of the particle chain. By analyzing the micro yield process of MR fluid, the yield stress of MR fluid in composite mode is calculated and verified by experiments. Then, the constitutive model of MR fluid in composite mode is established. The results show that the yield stress accuracy of MR fluid calculated based on the fusion dipole model is more than 94.1%.

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挤压-剪切复合模式下磁流变流体的本构模型

挤压强化效应可以显著提高磁流变液的屈服应力。然而，现有的经典偶极子模型不能准确描述挤压-剪切复合模式下磁流变液的微观结构，且缺乏复合模式下屈服应力的本构模型。本文采用经典偶极子方法、有限元方法和磁能分析方法对挤压-剪切复合模式下粒子间的相互作用进行了分析，提出了一种融合偶极子模型。通过分析颗粒链的特性，建立了在磁场和挤压作用下颗粒链磁能密度的数学模型。通过对磁流变液微观屈服过程的分析，计算了磁流变液复合模式下的屈服应力，并进行了实验验证。然后，建立了磁流变液复合模式下的本构模型。结果表明，基于融合偶极子模型计算的磁流变液屈服应力精度可达94.1%以上。

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.