A novel local radial basis function collocation method for multi-dimensional piezoelectric problems

Amir Noorizadegan, D.L. Young, Chuin‐Shan Chen

2021Journal of Intelligent Material Systems and Structures11 citationsDOI

Abstract

The local radial basis function collocation method (LRBFCM), a strong-form formulation of the meshless numerical method, is proposed for solving piezoelectric medium problems. The proposed numerical algorithm is based on the local Kansa method using variable shape parameter. We introduce a novel technique for the determination of shape parameter in the LRBFCM, which leads to greater accuracy, and simplicity. The implemented algorithm is first verified with a 2D Poisson equation. Then, we employed LRBFCM in a numerical simulation for 2D and 3D piezoelectric problems involving mutual coupling of the electric field and elastodynamic equations for mechanical field. The presented meshless method is verified using corresponding results obtained from the finite element method and moving least squares meshless local Petrov–Galerkin method. In particular, the 2D piezoelectric problem is verified with an exact solution.

Topics & Concepts

Moving least squaresRegularized meshless methodCollocation (remote sensing)Basis functionPetrov–Galerkin methodCollocation methodGalerkin methodFinite element methodMathematicsRadial basis functionPiezoelectricityMathematical analysisPoisson's equationMeshfree methodsSingular boundary methodField (mathematics)Numerical analysisApplied mathematicsComputer scienceDifferential equationOrdinary differential equationPhysicsBoundary element methodEngineeringStructural engineeringAcousticsArtificial neural networkPure mathematicsMachine learningNumerical methods in engineeringUltrasonics and Acoustic Wave PropagationComposite Structure Analysis and Optimization