Finite element analysis of the effect of boron nitride nanotubes in beta tricalcium phosphate and hydroxyapatite elastic modulus using the RVE model
Finite element analysis of the effect of boron nitride nanotubes in beta tricalcium phosphate and hydroxyapatite elastic modulus using the RVE model
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DOI：
10.1016/j.compositesb.2016.01.003
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发表时间：
2016-04-01
影响因子：
13.1
通讯作者：
Sen, Sadri
中科院分区：
文献类型：
--
作者：
Ali, Davar;Sen, Sadri
A numerical study was carried out to determine the effect of the boron nitride nanotubes (BNNTs) as a reinforcement element for two different implant materials. Random distribution of the BNNTs was reconstructed using the random sequential adsorption algorithm in the beta tricalcium phosphate (beta-TCP) and hydroxyapatite (HA) matrixes. A representative volume element (RVE) with 4% wt. of the BNNTs in beta-TCP and HA matrixes was prepared. The predicted elastic moduli of the beta-TCP-BNNTs and HA-BNNTs composites showed 24.1% and 26.3% enhancement, respectively, compared with the pure beta-TCP and HA. To validate our finite element method (FEM) analysis results, we used a modified Halpin-Tsai (H-T) approach to calculate the elastic modulus of the models. The results showed that the FEM and H-T were in good agreement, with 1.5% and 2.7% deviations for the beta-TCP-BNNTs and HA-BNNTs composites, respectively. In contrast, a major gap was found between our theoretical approaches and experimental results for the HA-BNNTs composite that is available in the literature. This deviation was probably a consequence of the manufacturing method of the composite, which was not considered in the RVE model. (C) 2016 Elsevier Ltd. All rights reserved.
