圆柱状压电压磁复合材料中波的传播和能量输送  

Wave Propagation and Energy Transportation along Cylindrical Piezoelectric-Piezomagnetic Material

作　　者：魏建萍[1] 苏先樾[1] 

机构地区：[1]北京大学湍流与复杂系统国家重点实验室,力学与工程科学系,北京100871

出　　处：《北京大学学报（自然科学版）》2006年第3期310-314,共5页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金(10272004和10232040)资助项目

摘　　要：应用“杆化模型”对压电压磁复合圆柱体中轴对称弯曲波进行了研究,得到了圆柱体低阶模态的频散曲线,而且它们能够按照拟P波和拟SV波及SH波的形式进行分类。发现在压电压磁复合材料中存在复合构成的电磁感应性质;沿着柱体轴向耦合传播的波中存在高速传播的电磁波和稳速传播的应力波;在由拟P波和拟SV波形成的通道上能量以不同的性态进行传输和相互交换。The axisymmetric flexural wave in a piezoelectric-piezomagnetic cylinder was studied by applying ＂rod model＂. The lower modes, which are classified by Quasi-P wave, Quasi-SV wave and SH wave, are obtained. Then the authors find that the electromagnetic induction, which does not exist in piezoelectric or piezomagnefic material, is in the composite material. And there are high-speed electromagnetic wave and steady stress wave propagation along the cylinder, and the energy transports and interchanges differently in channels formed by Quasi-P wave and Quasi-SV wave.

关 键 词：压电压磁复合材料 圆柱 弯曲波 

分 类 号：TB332[一般工业技术—材料科学与工程]