Classical micromechanics modeling of nanocomposites with carbon nanofibers and interphase
Classical micromechanics modeling of nanocomposites with carbon nanofibers and interphase
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DOI：
10.1177/0021998311401092
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发表时间：
2011-05
影响因子：
2.9
通讯作者：
Jaesang Yu;T. Lacy;H. Toghiani;C. Pittman;Y. Hwang
中科院分区：
文献类型：
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作者：
Jaesang Yu;T. Lacy;H. Toghiani;C. Pittman;Y. Hwang
采用细观力学参数法研究了碳纳米纤维形态(即中空截面与实心截面)、纳米纤维波纹度以及纳米纤维-树脂界面性质和尺寸对块体纳米复合材料弹性模量的影响。建立了具有多层涂层的非均质复合材料的Mori-Tanaka模型和自洽模型。对于给定的纳米纤维轴向力-位移关系，中空纳米纤维的弹性模量可以显著超过实心纳米纤维，从而导致块体纳米复合材料性能的显著差异。此外，纳米纤维-树脂界面的形成对整体弹性模量有显著的影响。与文献结果一致的是，较小程度的纳米纤维波纹度导致有效复合材料性能显著下降。
A micromechanics parametric study was performed to investigate the effect of carbon nanofiber morphology (i.e. hollow vs. solid cross-section), nanofiber waviness, and both nanofiber–resin interphase properties and dimensions on bulk nanocomposite elastic moduli. Mori–Tanaka and self-consistent models were developed for composites containing heterogeneities with multilayered coatings. For a given nanofiber axial force–displacement relationship, the elastic modulus for hollow nanofibers can significantly exceed that for solid nanofibers resulting in notable differences in bulk nanocomposite properties. In addition, the development of a nanofiber–resin interphase had a notable effect on the bulk elastic moduli. Consistent with results from the literature, small degrees of nanofiber waviness resulted in a significant decrease in effective composite properties.