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<p>The main goal of this paper is to present the free oscillation, static bending, and buckling of piezoelectric fluid-infiltrated porous metal foam (FPMF) nanosheet resting on Pasternak medium taking into account to flexoelectric and surface elasticity effects. The piezoelectric FPMF nanosheets are rested on Pasternak medium. The nonlocal strain gradient model in conjunction with refined higher-order shear deformation plate theory (rHSDT) and Hamilton’s variational principle derive the motion equations of piezoelectric FPMF nanosheet. The highlights of this study is that the two nonlocal and length-scale coefficients are variable along thickness like material characteristics. The equations of motion were solved through Navier’s method, from which the responses of displacement, stress, natural frequency and critical buckling load were extracted. The accuracy of the proposed method is verified through reliable publications. The outcome of this study reveals the significant effects of the nonlocal and length-scale parameters on the vibration, static bending, and buckling behaviors of piezoelectric FPMF nanosheets. The results of this study are a unique combination of size dependent effects, surface effects and flexoelectric effects, thus it will shed some light on the understanding of electromechanical behaviors at the nanometer scale.</p>

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Static bending, buckling and vibration analysis of piezoelectric fluid-infiltrated porous metal foam nanosheet taking into account surface and flexoelectric effects

  • 期刊论文

  • 发表日期：

    2025年7月5日

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  • Nhan Thinh Hoang,
  • Pham Hoang Tu,
  • Van Ke Tran,
  • Thu Huong Nguyen Thi

摘要

The main goal of this paper is to present the free oscillation, static bending, and buckling of piezoelectric fluid-infiltrated porous metal foam (FPMF) nanosheet resting on Pasternak medium taking into account to flexoelectric and surface elasticity effects. The piezoelectric FPMF nanosheets are rested on Pasternak medium. The nonlocal strain gradient model in conjunction with refined higher-order shear deformation plate theory (rHSDT) and Hamilton’s variational principle derive the motion equations of piezoelectric FPMF nanosheet. The highlights of this study is that the two nonlocal and length-scale coefficients are variable along thickness like material characteristics. The equations of motion were solved through Navier’s method, from which the responses of displacement, stress, natural frequency and critical buckling load were extracted. The accuracy of the proposed method is verified through reliable publications. The outcome of this study reveals the significant effects of the nonlocal and length-scale parameters on the vibration, static bending, and buckling behaviors of piezoelectric FPMF nanosheets. The results of this study are a unique combination of size dependent effects, surface effects and flexoelectric effects, thus it will shed some light on the understanding of electromechanical behaviors at the nanometer scale.