Construction of analytical treatment for smart composite materials composed of multiferroic material under thermal environment

利用由压电材料和磁致伸缩材料组成的多铁性材料，有可能开发出一种适用于热环境的新型智能复合材料体系。作为本课题的研究目的，推导了由各向异性和线性磁电热弹性材料构成的多层或功能梯度多铁材料的瞬态磁电热弹性问题的解析解。进行了数值计算，研究了位移和热应力的瞬态行为，以及磁场、电场和弹性场之间的耦合效应。

It is possible to develop a new smart composite material system which are practicable in the thermal environment using the multiferroic material composed of the piezoelectric and magnetostrictive materials. As the purpose of this research project, the analytical solutions for the transient magneto-electro-thermoelastic problems of the multilayered or functionally graded multiferroic material constructed of the anisotropic and linear magneto-electro-thermoelastic materials are derived. The numerical calculations are carried out, the transient behaviors of displacement and thermal stresses, and the coupling effect among magnetic, electric and elastic fields are investigated.