Fundamental solutions for two-dimensional anisotropic thermo-magneto-electro-elasticity

Chyanbin Hwu, Chung Lei Hsu, Chia Wei Hsu, Yui-Chuin Shiah

Research output: Contribution to journalArticle

Abstract

In this paper, with the consideration of thermal effects, eight equally important systems of constitutive laws generally used to describe anisotropic magneto-electro-elastic (MEE) materials are all considered. We provide simple mathematical relations to convert any one of the eight equation sets to the other seven sets. The equivalent reduced properties for two-dimensional analysis are obtained for eight possible different plane states of MEE solids. Complex variable Stroh formalism is used to derive the fundamental solution for two-dimensional thermo-MEE analysis. By using the identities of Stroh formalism, the complex form solution can be converted into real form. With the real form fundamental solution, the trouble induced by the multi-valued complex logarithmic function is circumvented and the extra line integral that appears in the thermal analysis of the boundary element method (BEM) can be eliminated. Thus, the temperature information inside the domain required by the extra line integral can be avoided, and a truly BEM for thermo-MEE analysis is achieved for the first time in the literature. The influence of heat source represented by the heat generation rate is also considered in our formulation. Verification of our solution is made by comparison with the analytical solution and the solution obtained by BEM using complex form solution with extra line integral as well as the solution by commercial finite element software ANSYS.

Original languageEnglish
Pages (from-to)3575-3596
Number of pages22
JournalMathematics and Mechanics of Solids
Volume24
Issue number11
DOIs
Publication statusPublished - 2019 Nov 1

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Fundamental Solution
Elasticity
Boundary element method
Curvilinear integral
Stroh Formalism
Boundary Elements
Thermal Analysis
Thermal Effects
Constitutive Law
Dimensional Analysis
Elastic Material
Heat generation
ANSYS
Complex Variables
Heat Source
Thermal effects
Thermoanalysis
Convert
Analytical Solution
Logarithmic

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Materials Science(all)
  • Mechanics of Materials

Cite this

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abstract = "In this paper, with the consideration of thermal effects, eight equally important systems of constitutive laws generally used to describe anisotropic magneto-electro-elastic (MEE) materials are all considered. We provide simple mathematical relations to convert any one of the eight equation sets to the other seven sets. The equivalent reduced properties for two-dimensional analysis are obtained for eight possible different plane states of MEE solids. Complex variable Stroh formalism is used to derive the fundamental solution for two-dimensional thermo-MEE analysis. By using the identities of Stroh formalism, the complex form solution can be converted into real form. With the real form fundamental solution, the trouble induced by the multi-valued complex logarithmic function is circumvented and the extra line integral that appears in the thermal analysis of the boundary element method (BEM) can be eliminated. Thus, the temperature information inside the domain required by the extra line integral can be avoided, and a truly BEM for thermo-MEE analysis is achieved for the first time in the literature. The influence of heat source represented by the heat generation rate is also considered in our formulation. Verification of our solution is made by comparison with the analytical solution and the solution obtained by BEM using complex form solution with extra line integral as well as the solution by commercial finite element software ANSYS.",
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Fundamental solutions for two-dimensional anisotropic thermo-magneto-electro-elasticity. / Hwu, Chyanbin; Hsu, Chung Lei; Hsu, Chia Wei; Shiah, Yui-Chuin.

In: Mathematics and Mechanics of Solids, Vol. 24, No. 11, 01.11.2019, p. 3575-3596.

Research output: Contribution to journalArticle

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