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The Effective Elastic Properties of Chain-like Structural Particle-reinforced Composites
Mechanics of Materials ( IF 3.9 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.mechmat.2020.103344
Haiyu Zhang , Fang Li , Xingzhe Wang

Abstract In recent years, as a series of chain-structured particle-reinforced composites (CSPRC), magnetorheological elastomers (MREs) can be one of the main components of absorbers, actuators and sensors, and have great application prospect in construction, vibration control and automobile industry and other fields. The particles in these composites usually form a chain-like anisotropic distribution, which takes into account certain periodicity and randomness. This feature brings a bit of a challenge in the effective prediction of their elastic behavior, especially the more intuitive prediction. A three-dimensional double inclusion model has been proposed in this paper, based on the generalized Mori-Tanaka theory, to study the effective elastic properties of these composites. Through the introduction of an effective medium into the representative volume element, the elastic interaction in the different directions of the composites has been simplified to be equivalent to the elastic interaction among particles in three orthogonal directions. An analytical expression that can be used to estimate the effective properties of these composite materials has been formulated. The model can not only be used to predict the anisotropic modulus and the Poisson's ratio of these composites, but also to predict the effective elastic properties of composites with isotropic particle distribution. Numerical results indicate some internal relationship between the elastic modulus composite materials and the elastic properties of matrix and particles, and simulation results were in good agreement with the experimental data.

中文翻译:

链状结构颗粒增强复合材料的有效弹性性能

摘要 近年来,作为一系列链状结构粒子增强复合材料(CSPRC),磁流变弹性体(MREs)可以成为减振器、执行器和传感器的主要组成部分之一,在建筑、振动控制和控制等方面具有广阔的应用前景。汽车工业等领域。这些复合材料中的颗粒通常形成链状各向异性分布,这考虑到了一定的周期性和随机性。这个特性给他们的弹性行为的有效预测带来了一些挑战,尤其是更直观的预测。本文基于广义 Mori-Tanaka 理论提出了三维双夹杂模型,以研究这些复合材料的有效弹性性能。通过在代表性体积单元中引入有效介质,复合材料不同方向的弹性相互作用被简化为等效于三个正交方向的粒子之间的弹性相互作用。已经制定了可用于估计这些复合材料的有效性能的分析表达式。该模型不仅可用于预测这些复合材料的各向异性模量和泊松比,还可用于预测具有各向同性颗粒分布的复合材料的有效弹性性能。数值结果表明弹性模量复合材料与基体和颗粒的弹性性能之间存在一定的内在联系,模拟结果与实验数据吻合较好。
更新日期:2020-05-01
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