摘要
利用矩阵递推方法，建立了层状板中Ｌａｍｂ波的特征方程以及相应的位移和应力分布计算公式，由此分析了双层板、软夹层板和硬夹层板中Ｌａｍｂ波的频散特性，特别指出软夹层的存在对Ｌａｍｂ波的频散特性有显著影响。该结论对工程测试分析有一定指导意义。
With recursive matrix method,the dispersion equation of Lamb wave in layered plates is derived in this paper,along with the expressions for displacement and stress distributions.Because the matrix of dispersion equation is real,it is easy to get solutions by numerical method. The presented method is suitable for complicate plate with many layers.With the computer program based on the above method,the dispersion characteristics of double layered plate and “sandwich” plate are analyzed the results indicate that the existence of softer middle layer affect the dispersion characteristics of Lamb waves significatly.
出处
《振动工程学报》
EI
CSCD
1998年第3期366-372,共7页
Journal of Vibration Engineering
