首页 | 本学科首页   官方微博 | 高级检索  
     

石墨烯片增强纳米复合材料微米圆柱壳的振动和稳定性
引用本文:张飞. 石墨烯片增强纳米复合材料微米圆柱壳的振动和稳定性[J]. 科学技术与工程, 2021, 21(32): 13965-13972
作者姓名:张飞
作者单位:中国飞机强度研究所, 西安710065;结构冲击动力学航空科技重点实验室,西安710065
摘    要:基于一阶剪切变形壳理论和应变梯度弹性理论,研究石墨烯片增强纳米复合材料(graphene platelets-reinforced nanocomposite,GPLRNC)微米圆柱壳的稳定性和自由振动。首先,通过Hamilton变分原理得到系统模型的控制微分方程。其次,利用Navier法获得GPLRNC微米壳的固有频率和临界屈曲载荷的解析解。结果表明,石墨烯片的充填质量和分布模式影响微米壳的稳定性和振动特性。当壳体内部石墨烯片的质量分数给定时,微米壳在石墨烯片的O-GPLRNC分布下具有最高的固有频率和临界屈曲载荷,在X-GPLRNC分布下则反之。此外,材料长度尺度参数、石墨烯片几何尺寸和微米壳几何尺寸对GPLRNC微米圆柱壳的稳定性和自由振动具有重要影响。

关 键 词:石墨烯片增强纳米复合材料(GPLRNC)  微米圆柱壳  应变梯度弹性理论(SGET)  一阶剪切变形壳理论  稳定性  自由振动
收稿时间:2021-03-06
修稿时间:2021-09-07

Vibration and Stability of Nanocomposite Cylindrical Microshell Reinforced with Graphene Platelets
Zhang Fei. Vibration and Stability of Nanocomposite Cylindrical Microshell Reinforced with Graphene Platelets[J]. Science Technology and Engineering, 2021, 21(32): 13965-13972
Authors:Zhang Fei
Affiliation:Aircraft Strength Research Institute of China
Abstract:This paper study the stability and free vibration of graphene platelets reinforced nanocomposite (GPLRNC) microshells based on the first-order shear deformation shell theory and the strain gradient elasticity theory (SGET). In the first place, the governing differential equation of the system is obtained by using Hamilton''s variational principle. And then, the Navier method is used to obtain the analytical solutions of the natural frequencies and critical buckling loads of the GPLRNC microshells. The results show that the filling weight fraction and distribution mode of graphene platelets (GPLs) will affect the stability and vibration characteristics of the microshells. When the weight fraction of the GPLs inside the microshell is given, the microshells have the highest natural frequencies and critical buckling loads under the O-GPLRNC distribution of the GPLs, but the opposite is true with the X-GPLRNC distribution. In addition, material length scale parameter, geometry size of GPLs and microshells have important effects on the stability and free vibration of the GPLRNC cylindrical microshells.
Keywords:graphene platelets reinforced nanocomposite   cylindrical microshells   strain gradient elasticity theory   first-order shear deformation shell theory   stability   free vibration
本文献已被 万方数据 等数据库收录!
点击此处可从《科学技术与工程》浏览原始摘要信息
点击此处可从《科学技术与工程》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号