Abstract

Up to now, no researches have been yet presented to investigate the static analysis of the carbon nanotube reinforced composite (CNTRC) doubly-curved nanoshells with considering the effect of thickness stretching in thermal environment. In this paper, deflection analysis of the CNTRC doubly-curved nanoshells subjected to thermo-mechanical loading based on nonlocal strain gradient theory is investigated. The temperature variation vary through the thickness linearly. Five different types of distributions of CNTRC including UD, FGX, FGV, FGO and FGA are considered to investigate their effects on the mechanical behavior of the doubly-curved nanoshells. All of the mechanical properties of the nanoshell are considered as temperature dependent. Hamilton’s principle is applied to derive the governing equations of motion, where Navier method is used to obtain the deflection of the nanoshells with simply-supported boundary conditions. The obtained results demonstrate that the effect of thickness stretching has vital role on the deflection of the CNTRC doubly-curved nanoshells.

摘要

到目前为止，还没有研究提出考虑热环境中厚度拉伸的影响来研究碳纳米管增强复合材料（CNTRC）双曲纳米壳的静态分析。在本文中，研究了基于非局部应变梯度理论的 CNTRC 双曲纳米壳在热机械载荷作用下的挠度分析。温度变化随厚度呈线性变化。考虑了五种不同类型的 CNTRC 分布，包括 UD、FGX、FGV、FGO 和 FGA，以研究它们对双曲面纳米壳的力学行为的影响。纳米壳的所有机械性能都被认为与温度有关。应用哈密顿原理推导运动的控制方程，其中 Navier 方法用于在简支边界条件下获得纳米壳的挠度。所得结果表明，厚度拉伸的影响对 CNTRC 双曲纳米壳的挠度具有重要作用。