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Advances in Aircraft and Spacecraft Science
  Volume 11, Number 3, September 2024 , pages 269-297
DOI: https://doi.org/10.12989/aas.2025.11.3.269
 

Electromechanical bending of Porous Functionally Graded Piezoelectric (PFGP) nanobeams with flexoelectricity
Alaa A. Abdelrahman, Hanaa E. Abdel-Mottaleb, Mohamed A. Eltaher, Azza M. Abdraboh and Abdallah M. Kabeel

 
Abstract
    This study develops a size-dependent model based on modified nonlocal strain gradient theory to examine the effects of flexoelectricity and porosity distribution on the electromechanical bending behavior of piezoelectric functionally graded (FG) nanocomposite beams on Winkler-Pasternak foundations under different loading conditions. The nanocomposite comprises a porous FG core with piezoelectric face layers, using a nonlinear power law for thorough-thickness FG material gradation. Various porosity distribution patterns are considered, and closed-form solutions for electromechanical bending deflection are derived and validated. Results show that nonclassical bending behavior can be optimized by adjusting FG gradation, porosity, flexoelectricity, and foundation parameters, providing insights for MEMS and NEMS applications.
 
Key Words
    electromechanical bending; flexoelectric; functionally graded porous material; modified electromechanical nonlocal strain gradient theory; piezoelectric layers; porosity distribution; Winkler- Pasternak elastic foundation
 
Address
Alaa A. Abdelrahman: Mechanical Design & Production Department, Faculty of Engineering, Zagazig University,
P.O. Box 44519, Zagazig, Egypt
Hanaa E. Abdel-Mottaleb: Structural Engineering Department, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Egypt
Mohamed A. Eltaher: Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah, Saudi Arabia
Azza M. Abdraboh: Physics Department, Faculty of Science, Benha University, Benha, Egypt
Abdallah M. Kabeel: Mechanical Design & Production Department, Faculty of Engineering, Zagazig University,
P.O. Box 44519, Zagazig, Egypt
 

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