A multiscale modeling of CNT-reinforced cement composites
A multiscale modeling of CNT-reinforced cement composites
复制标题
碳纳米管增强水泥复合材料的多尺度建模
DOI：
10.1016/j.cma.2016.06.019
复制
发表时间：
2016-09
影响因子：
7.2
通讯作者：
Liew K. M.
中科院分区：
文献类型：
--
作者：
Wang J. F.;Zhang L. W.;Liew K. M.
提出了一种碳纳米管（CNT）增强水泥基复合材料力学行为的多尺度计算建模方法。在宏观尺度的处理，钢筋被假定为嵌入在相应的体积分数的整体域。考虑到增强组分的体积分数、取向和排列方式，采用不同的非线性本构模型来模拟碳纳米管和基体复合材料，碳纳米管被认为是一维的，并且沿均匀的取向分布。一个介观尺度的描述被认为是为了描绘增强复合材料的细观形态和其相互作用的粘结滑移。采用交错技术将两个长度尺度方程组耦合在一起，采用Newton-Raphson方法求解非线性方程组，以跟踪复合材料的载荷-位移全过程。大量的实验结果验证了该模型的可行性，证明了该模型在非线性框架下的有效性。同时，通过对几个基准问题的求解，验证了算法的计算精度和效率。
A multiscale approach for computational modeling of the mechanical behavior of carbon nanotube (CNT) reinforced cement composites is presented. In a macroscopic scale treatment, reinforcement is assumed to be embedded in the overall domain in the corresponding volume fraction. Accounting for the volume fraction, orientation and arrangement of the reinforcing components, CNTs and a matrix are simulated by different nonlinear constitutive models to represent the composites, CNTs are considered as one-dimensional and distributed in a uniform orientation. A mesoscopic scale description is considered in order to depict the mesostructured morphology of the reinforced composites and the bond–slip of its mutual interaction. Two length-scale systems of equations are coupled together using a staggered technique, and the Newton–Raphson method is adopted to solve the nonlinear system equations in order to track the full load–displacement path of the composites. A number of available experimental tests are reproduced by which to illustrate the feasibility of the proposed model, which proves to be effective in the nonlinear framework. Meanwhile, computational accuracy and efficiency are also demonstrated through the solving of several benchmark problems.
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影响因子：
4.1
作者：
A. Huespe;J. Oliver;D. Mora
通讯作者：
A. Huespe;J. Oliver;D. Mora
影响因子：
5.4
作者：
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通讯作者：
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DOI：
10.1016/s0045-7825(03)00263-9
发表时间：
2003-05
影响因子：
7.2
作者：
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通讯作者：
J. Pamin;H. Askes;R. Borst
DOI：
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发表时间：
2005-10
影响因子：
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作者：
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通讯作者：
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影响因子：
2.9
作者：
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通讯作者：
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