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首页> 外文期刊>Journal of Materials Engineering and Performance >Determination of Thermoelastic Properties of Carbon Nanotube/Epoxy Composites Using Finite Element Method
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Determination of Thermoelastic Properties of Carbon Nanotube/Epoxy Composites Using Finite Element Method

机译：用有限元法测定碳纳米管/环氧复合材料的热弹性性能

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摘要

In the present study, three-dimensional finite element (FE) analysis has been performed for determination of thermoelastic properties of carbon nanotube (CNT)/epoxy composites considering both linear and nonlinear stress-strain relations of CNT. A square representative volume element has been considered for the FE analysis (FEA), and the effect of considering nonlinear stress-strain relation of CNT on the prediction of thermoelastic properties has been determined by comparing the results with the theoretical results. Results show that in order to obtain realistic values of thermoelastic properties, the nonlinear stress-strain relation of CNT needs to be used in the FEA. Not considering nonlinear stress-strain relation of CNTs in the FEA may lead to estimating erroneous values of thermoelastic properties of CNT composites which may have adverse effect in the design of structural components made of such composites subjected to thermomechanical loading.
机译：在本研究中，已经进行了三维有限元（Fe）分析来确定碳纳米管（CNT）/环氧复合材料的热弹性性能，考虑到CNT的线性和非线性应力应变关系。 已经考虑了用于Fe分析（FEA）的方形代表性体积元素，并且通过将结果与理论结果进行比较，确定了考虑CNT对热弹性特性预测的非线性应力 - 应变关系的效果。 结果表明，为了获得热弹性的现实值，CNT的非线性应力应变关系需要在FEA中使用。 不考虑FEA中的CNT的非线性应力 - 应变关系可能导致CNT复合材料的热弹性性能的错误值，这在结构部件的设计中可能具有不利影响，这些结构部件制成的结构部件制成的这种复合材料的设计中进行的。

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