A comprehensive closed form micromechanics model for estimating the elastic modulus of nanotube-reinforced composites
A comprehensive closed form micromechanics model for estimating the elastic modulus of nanotube-reinforced composites
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DOI：
10.1016/j.compositesa.2005.09.016
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发表时间：
2006-01-01
影响因子：
8.7
通讯作者：
Gibson, Ronald F.
中科院分区：
文献类型：
--
作者：
Anumandla, Vijay;Gibson, Ronald F.
本文描述了一个近似的，但全面的，封闭形式的细观力学模型估计的有效弹性模量的碳纳米管增强复合材料。该模型结合了通常观察到的纳米管曲率，纳米管长度，以及纳米管的1D和3D随机排列。从纳米尺度代表性体积单元的封闭形式微观力学模型获得的分析结果和从纳米管的有效增强模量的等效有限元模型获得的结果揭示，增强模量强烈地依赖于波纹度，其中，即使纳米管曲率的微小变化也可以引起所提供的有效增强的显著变化。微观力学模型也被认为是产生合理的协议与实验数据的有效拉伸模量的复合材料增强多壁纳米管（MWNTs），并具有不同的MWNT体积分数。(c)2005爱思唯尔有限公司保留所有权利。
This paper describes an approximate, yet comprehensive, closed form micromechanics model for estimating the effective elastic modulus of carbon nano tube-reinforced composites. The model incorporates the typically observed nanotube curvature, the nanotube length, and both 1D and 3D random arrangement of the nanotubes. The analytical results obtained from the closed form micromechanics model for nanoscale representative volume elements and results from an equivalent finite element model for effective reinforcing modulus of the nanotube reveal that the reinforcing modulus is strongly dependent on the waviness, wherein, even a slight change in the nanotube curvature can induce a prominent change in the effective reinforcement provided. The micromechanics model is also seen to produce reasonable agreement with experimental data for the effective tensile modulus of composites reinforced with multi-walled nanotubes (MWNTs) and having different MWNT volume fractions. (c) 2005 Elsevier Ltd. All rights reserved.