石墨烯纳米复合材料梁的自由振动分析  

Free Vibration Analysis of Graphene Platelet-reinforced Nanocomposite Beams

作　　者：张辉 冯芹 张小卫 段军[1] 周晓莲 ZHANG Hui;FENG Qin;ZHANG Xiaowei;DUAN Jun;ZHOU Xiaolian(Intelligent Manufacturing College,Dazhou Vocational and Technical College,Dazhou Sichuan 635000,China)

机构地区：[1]达州职业技术学院智能制造学院,四川达州635000

出　　处：《高速铁路新材料》2024年第6期6-10,共5页Advanced Materials of High Speed Railway

基　　金：达州职业技术学院硕士科研项目(2022DZYSS18)。

摘　　要：针对石墨烯纳米片定向排列的情况,研究了石墨烯纳米复合材料梁的自由振动问题。采用Halpin-Tsai微观力学模型估算石墨烯增强复合材料的弹性模量,基于一阶剪切梁理论对石墨烯纳米复合材料梁进行动力学建模,采用微分求积法求解梁的固有频率。结果表明:石墨烯纳米片定向排列对基体材料结构的刚度增强效果优于随机分布的情况。石墨烯纳米片采用合理的定向排列方式可进一步提高基体材料结构的固有频率。Free vibration of graphene platelet-reinforced nanocomposite beams dispersing with aligned graphene platelets was investigated.The elastic modulus graphene platelet-reinforced nanocomposite were estimated by Halpin-Tsai micromechanical model.The graphene platelet-reinforced nanocomposite beam was modeled based on the first-order shear deformation beam theory,and the natural frequency of the beam was solved by the differential quadrature method.The numerical results show that the fundamental natural frequencies of the beams dispersing with aligned graphene platelets are much higher than those of the beams dispersing with randomly distributed graphene platelets.Moreover,the enhancement of graphene nanoplatelets can be further improved by a reasonable arrangement.

关 键 词：石墨烯 一阶剪切梁理论 微分求积法 固有频率 

分 类 号：TB33[一般工业技术—材料科学与工程]