【作者】 夏唐代； 姚云龙； 刘瑜； 许军平；

【Author】 XIA Tang-dai YAO Yun-long LIU Yu XU Jun-ping (College of Civil Engineering,Zhejiang University,Hangzhou 310027,China)

【机构】 浙江大学建筑工程学院；

【摘要】 无穷大平板中存在Lamb波,采用传递矩阵法得到双层板的特征方程,对双层板中板波的频散特性进行了分析,通过讨论特征方程中各项参数对频散特性的影响,验证了低频和高频时的极限波速,计算表明该波速和双层板的材料性质有关。更多还原

【Abstract】 Propagation of Lamb wave in infinite-plate is studied.Characteristic equation of two-layered plate is obtained by recursive matrix method.Dispersion of wave in two-layered plate is analyzed.By discussing the influence of parameters in characteristic equation on dispersion,the terminal velocities in low-frequency case and high-frequency case are verified.Calculation result indicates that the terminal velocity is relative to the material property of two-layered plate.更多还原