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Introduction <p>Due to the unique characteristics of the FG-CNTRC structure and piezoelectric materials, two types of piezoelectric FG-CNTRC structure are formed by laying the piezoelectric materials in different ways on the FG-CNTRC plate, and their free vibration and acoustic responses are investigated.</p> Methods <p>The dynamic equation of the structure are derived based on the third-order shear deformation theory and Hamilton’s principle. By Navier’s method the vibration frequencies and the structural-acoustic responses of the piezoelectric FG-CNTRC plate with simply supported edges under the concentrated harmonic excitation are obtained.</p> Results <p>The theoretical results are validated by the finite element simulation. The vibro-acoustic characteristics of two types of piezoelectric FG-CNTRC plate are compared, and the influences of parameter changes on the free vibration and acoustic responses of the structures are discussed.</p>

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Analysis of Free Vibration and Acoustic Responses of FG-CNTRC Sandwich Plates with Different Piezoelectric Material Lay-Up Layers

  • 期刊论文

  • 发表日期：

    2025年1月22日

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  • Feng-Lian Li,
  • Yu-Qi Hao,
  • Yu-Xin Hao,
  • Mei Lv

摘要

Introduction

Due to the unique characteristics of the FG-CNTRC structure and piezoelectric materials, two types of piezoelectric FG-CNTRC structure are formed by laying the piezoelectric materials in different ways on the FG-CNTRC plate, and their free vibration and acoustic responses are investigated.

Methods

The dynamic equation of the structure are derived based on the third-order shear deformation theory and Hamilton’s principle. By Navier’s method the vibration frequencies and the structural-acoustic responses of the piezoelectric FG-CNTRC plate with simply supported edges under the concentrated harmonic excitation are obtained.

Results

The theoretical results are validated by the finite element simulation. The vibro-acoustic characteristics of two types of piezoelectric FG-CNTRC plate are compared, and the influences of parameter changes on the free vibration and acoustic responses of the structures are discussed.