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The vibrational behavior of carbon nanotube-reinforced composite (FG-CNTRC) plates under hygrothermal environments is investigated in this study. The plate is made of polymethyl methacrylate (PMMA) matrix and reinforced with carbon nanotubes (CNTs) that are either uniformly distributed or exhibit functionally graded (FG) distribution patterns through the thickness of the plate. The extended rule of mixture is employed to characterize the effective material properties of the plates considering temperature and moisture dependencies. The first-order shear deformation theory (FSDT) is used to derive the coupled hygro-elastic, thermo-elastic relations along with the governing equations of motion for the FG-CNTRC plates, while the finite element method (FEM) is utilized to solve these equations. A parametric study was performed to investigate the effect of important parameters including plate geometry, content of CNTs in the plate, moisture rise, and temperature rise on the vibrational behavior of the plates. The outcomes indicate that rising temperature and/or moisture leads to a marked reduction in the natural frequencies and consequently on the plate stiffness.

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Vibration Behavior Analysis of Nanocomposite Plates Reinforced with Carbon Nanotubes in Hygrothermal Environments

  • 会议论文

  • 发表日期：

    2026年

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  • Zahira Mouas,
  • Rachid Tiberkak,
  • Yasser Chiker,
  • Mourad Bachene,
  • Madjid Ezzraimi

摘要

The vibrational behavior of carbon nanotube-reinforced composite (FG-CNTRC) plates under hygrothermal environments is investigated in this study. The plate is made of polymethyl methacrylate (PMMA) matrix and reinforced with carbon nanotubes (CNTs) that are either uniformly distributed or exhibit functionally graded (FG) distribution patterns through the thickness of the plate. The extended rule of mixture is employed to characterize the effective material properties of the plates considering temperature and moisture dependencies. The first-order shear deformation theory (FSDT) is used to derive the coupled hygro-elastic, thermo-elastic relations along with the governing equations of motion for the FG-CNTRC plates, while the finite element method (FEM) is utilized to solve these equations. A parametric study was performed to investigate the effect of important parameters including plate geometry, content of CNTs in the plate, moisture rise, and temperature rise on the vibrational behavior of the plates. The outcomes indicate that rising temperature and/or moisture leads to a marked reduction in the natural frequencies and consequently on the plate stiffness.