江苏大学学报（自然科学版）2012，Vol.33Issue(4)：457-462,6.DOI:10.3969/j.issn.1671-7775.2012.04.017
压电晶片激发理想流体中各向异性板的泄漏Lamb波
Leaky Lamb waves derived from piezoelectric wafer active of loaded anisotropic plate sensor in ideal fluid
摘要
Abstract
Based on the fluid-structure interaction theory, finite element method was used to numerically simulate the Leaky Lamb waves derived from piezoelectric wafer active sensor of anisotropic plate in ideal fluid. The dispersion and attenuation characteristics of Leaky Lamb waves in unidirectional fiber reinforced composites were analyzed to obtain the numerical solution of full wave field. The effects of different orientation of fiber with different excitative frequencies on the waveform were discussed. The results show that two modes of Leaky Lamb waves exist simultaneously in anisotropic plate immersed in ideal fluid. One is a Non-dispersive and barely attenuation mode of S0 , the other is a dispersive and attenuation mode of A0. Velocity, dispersion and attenuation characteristics of waveform are significantly affected by fiber orientation. The quantitative relation between the excitation, the material parameters and the corresponding waveform was established by numerical simulation to provide a theoretical basis for NET and NDE applications of Leaky Lamb waves.关键词
泄漏Lamb波/压电效应/有限元方法/各向异性/流固耦合Key words
Leaky Lamb waves/piezoelectric effect/finite element method/anisotropic/fluid-structure interaction分类
数理科学引用本文复制引用
许伯强,岳去疾,陈安麒,徐晨光,徐桂东..压电晶片激发理想流体中各向异性板的泄漏Lamb波[J].江苏大学学报（自然科学版）,2012,33(4):457-462,6.基金项目
国家"863"计划项目(2009AA03Z107) （2009AA03Z107）
国家自然科学基金资助项目(11172114) （11172114）
江苏省自然科学基金资助项目(10KJA140006) （10KJA140006）
