轴向拉力及静水压力作用下多孔石墨烯增强截锥壳的屈曲特性研究  

Buckling of FG-GRC truncated conical shell subjected to the combined loads of axial tension and hydrostatic pressure

作　　者：黄小林 王佳恒 韦能国 肖薇薇 HUANG Xiaolin;WANG Jiaheng;WEI Nengguo;XIAO Weiwei(School of Architecture and Transportation Engineering,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学建筑与交通工程学院,广西桂林541004

出　　处：《武汉科技大学学报》2024年第3期166-173,共8页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金项目(12162010);广西省自然科学基金项目(2021GXNSFAA220087).

摘　　要：为研究轴向拉力与静水压力作用下多孔石墨烯增强截锥壳的屈曲特性,基于泡沫金属材料参数的关系和修正的Halpin-Tsai模型,计算了不同孔隙和石墨烯分布的石墨烯增强复合材料的物性参数。利用经典薄壳理论建立了截锥壳屈曲控制方程,并用Galerkin积分法求得了屈曲临界荷载的解析解,根据数值结果讨论了孔隙、石墨烯和截锥壳几何尺寸等因素对材料临界屈曲荷载的影响。结果表明,石墨烯作为增强材料可显著提升壳体的抗屈曲性能,且其抗屈曲能力随着石墨烯含量增加而提高;当壳体表层孔隙少且石墨烯含量高时,截锥壳的抗屈曲能力更好;另外,截锥壳尺寸也会对其抗屈曲性能造成影响。To investigate the buckling behaviour of porous FG-GRC truncated conical shells under axial tension and hydrostatic pressure,the relationship derived from foam metal parameters and the modified Halpin-Tsai model were utilized to calculate the material properties of graphene composites with varying porosities and graphene distributions;classical thin shell theory was employed to formulate the buckling control equations for the truncated conical shells,and the critical buckling loads were analytically determined using the Galerkin integral method.The effects of porosity,graphene content,and geometric dimensions of the truncated conical shell on the critical buckling load were therefore analyzed.The results indicate that graphene,as a reinforcing material,can significantly enhance the buckling resistance of the shell,and the performance improves as the graphene content rises.Moverover,truncated conical shells with higher graphene content and lower surface porosity exhibit enhanced buckling resistance.Furthermore,the geometric dimensions of the shells also have an influence on the corresponding buckling performance.

关 键 词：石墨烯 孔隙 屈曲 FG-GRC 截锥壳 解析法 

分 类 号：TB333[一般工业技术—材料科学与工程]