Micromechanical analysis on anisotropy of structured magneto-rheological elastomer

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Li, R.^1 ; Zhang, Z.^1 ; Chen, S.W.^2 ; Wang, X.J.^1

Chongqing Univ of Posts and Telecommunications, Chongqing

400065, China^1

Chongqing Univ of Sci and Technol, Academy Math and Phys, Chongqing

400030, China^2

关键词: Equivalent elastic modulus;    Ferromagnetic particles;    Layer-like structures;    Linear elastic material;    Magneto-rheological elastomers;    Micro-mechanical analysis;    Mori Tanaka method;    Reinforced layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012068/pdf
DOI  :  10.1088/1757-899X/87/1/012068

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper investigates the equivalent elastic modulus of structured magneto-rheological elastomer (MRE) in the absence of magnetic field. We assume that both matrix and ferromagnetic particles are linear elastic materials, and ferromagnetic particles are embedded in matrix with layer-like structure. The structured composite could be divided into matrix layer and reinforced layer, in which the reinforced layer is composed of matrix and the homogenously distributed ferromagnetic particles in matrix. The equivalent elastic modulus of reinforced layer is analysed by the Mori-Tanaka method. Finite Element Method (FEM) is also carried out to illustrate the relationship between the elastic modulus and the volume fraction of ferromagnetic particles. The results show that the anisotropy of elastic modulus becomes noticeable, as the volume fraction of particles increases.