Flexoelectricity effects on smart piezoelectric nanoplates using an isogeometric analysis-based Chebyshev shear deformation theory

Chúng tôi vui mừng thông báo rằng TS. Thái Hoàng Chiến và các đồng nghiệp đã xuất bản công trình có tựa đề "Flexoelectricity effects on smart piezoelectric nanoplates using an isogeometric analysis-based Chebyshev shear deformation theory” trên tạp chí Computers & Structures

Tóm tắt:

This study conducts a comprehensive investigation into free vibration and static behaviors of smart piezoelectric nanoplates, incorporating electromechanical coupling phenomena, particularly the flexoelectric effect. The flexoelectric effect, which characterizes the interaction between electric polarization and strain gradient, is considered by capturing size-dependent properties at the nanoscale. To enhance modeling accuracy, the third-order Chebyshev shear deformation theory is employed, naturally fulfilling the zero-shear stress conditions on the top and bottom surfaces of the plate without requiring supplementary constraints. For the computation of nanoplate displacement and natural frequency, isogeometric analysis is utilized to discretize the problem domain, offering superior geometric representation and computational efficiency. The present study systematically investigates the effects of flexoelectricity boundary conditions and material properties on structural behaviors of smart piezoelectric nanoplates. Numerical results demonstrate that the flexoelectric effect significantly enhances the stiffness and natural frequency of piezoelectric nanoplates, particularly for thinner structures. As thickness increases, this influence diminishes and the results converge toward classical predictions. The findings provide valuable insights for the design of nanoscale piezoelectric and flexoelectric devices in smart structural applications.