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Dual number algebra method for Green's function derivatives in 3D magneto-electro-elasticity

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The Green functions are the basic elements of the boundary element method. To obtain the boundary integral formulation the Green function and its derivative should be known for the considered differential operator. Today the interesting group of materials are electronic composites. The special case of the electronic composite is the magnetoelectroelastic continuum. The mentioned continuum is a model of the piezoelectric-piezomagnetic composites. The anisotropy of their physical properties makes the problem of Green's function determination very difficult. For that reason Green's functions for the magnetoelectroelastic continuum are not known in the closed form and numerical methods should be applied to determine such Green's functions. These means that the problem of the accurate and simply determination of Green's function derivatives is even harder. Therefore in the present work the dual number algebra method is applied to calculate numerically the derivatives of 3D Green's functions for the magnetoelectroelastic materials. The introduced method is independent on the step size and it can be treated as a special case of the automatic differentiation method. Therefore, the dual number algebra method can be applied as a tool for checking the accuracy of the well-known finite difference schemes.

Original languageEnglish
Title of host publicationComputer Methods in Mechanics, CMM 2017
Subtitle of host publicationProceedings of the 22nd International Conference on Computer Methods in Mechanics
EditorsTadeusz Burczynski, Jaroslaw Latalski, Ewa-Blazik Borowa, Jerzy Podgorski, Jaroslaw Bec, Mieczyslaw Kuczma, Jerzy Warminski
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416147
DOIs
Publication statusPublished - 5 Jan 2018
Event22nd International Conference on Computer Methods in Mechanics, CMM 2017 - Lublin, Poland
Duration: 13 Sept 2017 → 16 Sept 2017

Publication series

NameAIP Conference Proceedings
Volume1922
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference22nd International Conference on Computer Methods in Mechanics, CMM 2017
Country/TerritoryPoland
CityLublin
Period13/09/17 → 16/09/17

ASJC Scopus subject areas

  • General Physics and Astronomy

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