TY - JOUR

T1 - Fundamental solutions for two-dimensional anisotropic thermo-magneto-electro-elasticity

AU - Hwu, Chyanbin

AU - Hsu, Chung Lei

AU - Hsu, Chia Wei

AU - Shiah, Y. C.

N1 - Funding Information:
This work was supported by the Ministry of Science and Technology, Taiwan, Republic of China (grant number MOST 104-2221-E-006-138-MY3).
Publisher Copyright:
© The Author(s) 2019.

PY - 2019/11/1

Y1 - 2019/11/1

N2 - 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.

AB - 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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U2 - 10.1177/1081286519851151

DO - 10.1177/1081286519851151

M3 - Article

AN - SCOPUS:85067795522

SN - 1081-2865

VL - 24

SP - 3575

EP - 3596

JO - Mathematics and Mechanics of Solids

JF - Mathematics and Mechanics of Solids

IS - 11

ER -