南京大学学报（自然科学版）2013，Vol.49Issue(1)：58-63,6.
侧面周期嵌入空气柱薄板中兰姆波带隙研究
Lamb waves in thin plates with the surfaces parallel to the periodically inserted void cylinders
摘要
Abstract
The authors study numerically the propagation of Lamb waves in one-dimensional periodic thin plates consisting of a row of void cylinders inserted periodically in the host material.The surfaces of the plates are parallel to the axis of periodicity.The lowest Lamb wave complete band gap of the composite thin plates originates mainly from the Bragg scattering and only exist in some filling ratio range.The band gap reach its maximum width almost in the same filling ratio for the cylinder radius and lattice spacing are respectively employed as variables.We show that the band gap has a good adjustability and can be substantially enlarged by using multiple periodic systems which consist of several pieces of periodic structure with different filling fraction.关键词
声子晶体/兰姆波/禁带Key words
phononic crystals/ Lamb waves/ band gaps引用本文复制引用
丁红星,沈中华,戴丽莉,陆建,倪晓武..侧面周期嵌入空气柱薄板中兰姆波带隙研究[J].南京大学学报（自然科学版）,2013,49(1):58-63,6.基金项目
National Natural Science Foundation of China(11274175,61108013),Program for New Century Excellent Talents in University,Jiangsu Province Qing Lan Project （11274175,61108013）
