Wave propagation analysis of a ceramic-metal functionally graded sandwich plate with different porosity distributions in a hygro-thermal environment

Saeed I. Tahir, Abdelbaki Chikh, Abdelouahed Tounsi*, Mohammed A. Al-Osta, Salah U. Al-Dulaijan, Mesfer M. Al-Zahrani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

196 Scopus citations

Abstract

Wave propagation analysis of porous functionally graded (FG) sandwich plate in a hygro-thermal environment is presented in this paper. The sandwich plates’ composing materials change through three layers that are either homogeneous ceramic, homogeneous metal, or power-law-based functionally graded ceramic–metal. Six different porosity models are considered in the analysis to express the porosities’ distribution factor and uniformity. The study is conducted using a simple four-unknown integral higher-order shear deformation theory (HSDT). The effect of moisture and temperature on wave propagation in porous FG sandwich plates is investigated by considering their role on the materials’ expansion. The governing equations are derived for the wave propagation problem based on the presented theory via Hamilton's principle. A generalized solution for wave propagation is applied to formulate the stiffness and mass matrix that describes the dispersion relations. The numerical results are obtained by solving an eigenvalue problem. The effects of core-to-thickness ratio, FGM power index, porosity volume fraction, temperature, and moisture change are illustrated and discussed. The presented results can be utilized as a benchmark for further studies on wave propagation in FGM plates.

Original languageEnglish
Article number114030
JournalComposite Structures
Volume269
DOIs
StatePublished - 1 Aug 2021

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Functionally graded sandwich plate
  • Hygro-thermal loading
  • Integral higher-order plate theory
  • Porosity distribution
  • Wave Propagation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

Fingerprint

Dive into the research topics of 'Wave propagation analysis of a ceramic-metal functionally graded sandwich plate with different porosity distributions in a hygro-thermal environment'. Together they form a unique fingerprint.

Cite this