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A Cosserat-type plate theory and its application to carbon nanotube microstructure

机译:Cosserat型板理论及其在碳纳米管微观结构中的应用

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摘要

The predictive capabilities of plate and shell theories greatly depend on their underlying kinematic assumptions. In this study, we develop a Cosserat-type elastic plate theory which accounts for rotations around the normal to the mid-surface plane (so-called drilling rotations). Internal loads, equilibrium equations, boundary conditions and constitutive equations are derived. The case of a Single Walled carbon Nanotube (SWNT) modelled as a Cosserat medium is taken here as a reference example. Material parameters are identified and the proposed theory is used to solve analytically the problem of a polymer- SWNT composite tube under torsion. Predictions such as an absolute size effect are compared to those of the classical Cauchy-de Saint-Venant results. © 2014 Science Publication.
机译:板壳理论的预测能力在很大程度上取决于其潜在的运动学假设。在这项研究中,我们开发了一种Cosserat型弹性板理论,该理论解释了围绕法线到中表面平面的旋转(所谓的钻孔旋转)。得出内部载荷,平衡方程,边界条件和本构方程。在此,将以Cosserat介质为模型的单壁碳纳米管(SWNT)的情况作为参考示例。确定材料参数,并将所提出的理论用于分析聚合物-SWNT复合管在扭转下的问题。将诸如绝对尺寸效应的预测与经典的Cauchy-de Saint-Venant结果进行比较。 ©2014科学出版物。

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