文章摘要
邓明晰,廖建中.广义兰姆波的积累二次谐波发生研究[J].声学技术,1999,(4):161~167
广义兰姆波的积累二次谐波发生研究
Generation of cumulative second harmonic of generalized Lamb wave propagation
投稿时间:1999-03-25  修订日期:2009-06-08
DOI:
中文关键词: 广义兰姆波  积累效应  二次谐波
英文关键词: generalized Lamb wave  cumulative effect  the second harmonic
基金项目:
作者单位
邓明晰 后勤工程学院, 重庆 400016 
廖建中 四川压电与声光技术研究所, 重庆 400060 
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中文摘要:
      借助色散导波的部分波分析方法、二阶微扰理论及界面的声非线性反射处理技术,本文对声波导中广义兰姆波的积累二次谐波发生进行了理论研究。结果表明,在一定条件下,源于声波导介质的体非线性、由广义兰姆波的部分波非线性相互作用所发生的二次谐波具有随传播距离积累增长的性质,文中给出了广义兰姆波的积累二次谐波发生所要满足的条件,并求解出相应的积累二次谐波之解析式。
英文摘要:
      Cumulative second-harmonic gerneration of generalized Lamb wave propagation in a solid waveguide has been theoretically analyzed in this article. It is based on the partial wave analysis method of dispersive guided wave, second-order perturbation approximation and nonlinear reflection of acoustic waves at an interface. That the second harmonic, under certain conditions, may retain the cumulative growth effect along with the propagation distance is found. The existence condition of cumulative second-harmonic generation and the corresponding analytical expression of cumulative second harmonic are obtained.
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