Abstract

The main aim of this paper is to investigate the postbuckling and buckling of functionally graded graphene-reinforced composite (FG-GRC) laminated cylindrical shells strengthened by stiffeners under axial compression with the uniform temperature change effect. The stiffener design option for FG-GRC cylindrical shells under axial compression is presented and a suitably smeared stiffener technique for GRC laminated stiffener system is developed. Basing on the von Kármán Donnell shell theory, the Galerkin’s procedure, and the three-term solution of deflection, the explicit forms of critical buckling and expression of load-deflection postbuckling curves relation are obtained. Effects of the GRC laminated stiffeners, the environment temperature, the graphene-reinforced parameters on the compressed buckling behavior are validated.

摘要

本文的主要目的是研究功能梯度石墨烯增强复合材料 (FG-GRC) 层状圆柱壳在轴向受压和均匀温度变化效应下加固的后屈曲和屈曲。提出了轴压下 FG-GRC 圆柱壳的加强筋设计方案，并开发了 GRC 层合加强筋系统的适当涂抹加强筋技术。基于von Kármán Donnell 壳理论、Galerkin 程序和挠度三项解，得到了临界屈曲的显式和荷载-挠度后屈曲关系的表达式。验证了 GRC 层压加强筋、环境温度、石墨烯增强参数对压缩屈曲行为的影响。