Open Access

ARTICLE

An Effective Meshless Approach for Inverse Cauchy Problems in 2D and 3D Electroelastic Piezoelectric Structures

by Ziqiang Bai¹, Wenzhen Qu^2,*, Guanghua Wu^3,*

1 School of Automation, Qingdao University, Qingdao, 266071, China
2 School of Mathematics and Statistics, Qingdao University, Qingdao, 266071, China
3 Weifang University of Science and Technology, Weifang, 262700, China

* Corresponding Authors: Wenzhen Qu. Email: ; Guanghua Wu. Email:

(This article belongs to the Special Issue: New Trends on Meshless Method and Numerical Analysis)

Computer Modeling in Engineering & Sciences 2024, 138(3), 2955-2972. https://doi.org/10.32604/cmes.2023.031474

Received 20 June 2023; Accepted 11 August 2023; Issue published 15 December 2023

Abstract

In the past decade, notable progress has been achieved in the development of the generalized finite difference method (GFDM). The underlying principle of GFDM involves dividing the domain into multiple sub-domains. Within each sub-domain, explicit formulas for the necessary partial derivatives of the partial differential equations (PDEs) can be obtained through the application of Taylor series expansion and moving-least square approximation methods. Consequently, the method generates a sparse coefficient matrix, exhibiting a banded structure, making it highly advantageous for large-scale engineering computations. In this study, we present the application of the GFDM to numerically solve inverse Cauchy problems in two- and three-dimensional piezoelectric structures. Through our preliminary numerical experiments, we demonstrate that the proposed GFDM approach shows great promise for accurately simulating coupled electroelastic equations in inverse problems, even with 3% errors added to the input data.

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Keywords

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