• 文献标题:   Wave dispersion characteristics of porous graphene platelet-reinforced composite shells
  • 文献类型:   Article
  • 作  者:   EBRAHIMI F, SEYFI A, DABBAGH A, TORNABENE F
  • 作者关键词:   wave propagation, porous nanocomposite, graphene platelet gpl, firstorder shear deformation shell theory
  • 出版物名称:   STRUCTURAL ENGINEERING MECHANICS
  • ISSN:   1225-4568 EI 1598-6217
  • 通讯作者地址:   Imam Khomeini Int Univ
  • 被引频次:   13
  • DOI:   10.12989/sem.2019.71.1.099
  • 出版年:   2019

▎ 摘  要

Wave propagation analysis of a porous graphene platelet reinforced (GPLR) nanocomposite shell is investigated for the first time. The homogenization of the utilized material is procured by extending the Halpin-Tsai relations for the porous nanocomposite. Both symmetric and asymmetric porosity distributions are regarded in this analysis. The equations of the shell's motion are derived according to Hamilton's principle coupled with the kinematic relations of the first-order shear deformation theory of the shells. The obtained governing equations are considered to be solved via an analytical solution which includes two longitudinal and circumferential wave numbers. The accuracy of the presented formulations is examined by comparing the results of this method with those reported by former authors. The simulations reveal a stiffness decrease in the cases which porosity influences are regarded. Also, one must pay attention to the effects of longitudinal wave number on the wave dispersion curves of the nanocomposite structure.