功能梯度电磁弹性材料的表面波传播  

Surface Wave Propagation in Functionally-Graded Magneto-Electro-Elastic Materials

作　　者：汤亮[1] 

机构地区：[1]上海大学上海市应用数学和力学研究所,上海200072

出　　处：《上海大学学报（自然科学版）》2010年第6期643-648,共6页Journal of Shanghai University:Natural Science Edition

摘　　要：研究半无限大功能梯度电磁复合材料中的表面波问题.假设材料性质沿厚度方向指数变化,在电磁学开路和短路边界条件下,基于电磁弹性介质的运动方程得到表面波波速方程,并讨论材料梯度系数对波速的影响.该研究为功能梯度电磁弹性材料器件的研制提供理论依据.Surface wave in half-infinite functionally-graded magneto-electro-elastic materials is investigated. For convenience in the analysis, characteristics of the material are assumed to vary exponentially along the thickness direction. Based on the magneto-electro-elastic theory, a velocity equation of surface wave is derived under the open- and short-circuit boundary conditions. The effect of material gradient coefficient on the wave velocity is studied. The computation results provide a basis for the development of new functionally-graded magneto-electro-elastic devices.

关 键 词：功能梯度 电磁弹性材料 表面波 

分 类 号：O347.4[理学—固体力学]