哈尔滨工程大学学报Issue(10)：1267-1273,7.DOI:10.3969/j.issn.1006-7043.201211043
弹性板中Lamb波在板端面的模态转换研究
Research on mode conversion of Lamb wave at end of elastic plate
摘要
Abstract
The research on the condition that an incident sound wave excites the Lamb wave in underwater elastic plate and the mode conversion of the Lamb wave at the end of submerged elastic plate may become the basis for un-derwater target recognition. By the conversion solution for the mode equation of the elastic characteristic function, the energy reflecting coefficients of various modes of Lamb wave are solved when some mode of Lamb wave becomes incident into the end. The measurement experiment result on the scattering waves of the submerged elastic plate shows that, only when the incidence is applied at the critical angle of some mode of Lamb wave, this mode of Lamb wave may be directly excited in the elastic plate, while the other modes of Lamb waves are formed by reflection of this mode of Lamb wave at the end of the elastic plate. By the measurement and comparison for the sizes of leaky wave of various modes of Lamb wave in water, the theory on mode conversion and energy re-distribution at relevant ends are verified.关键词
Lamb波/模态转换/模态等式/反射系数/激励/漏波/弹性板Key words
lamb wave/mode conversion/mode equation/reflecting coefficient/excitation/leaky wave/elastic plate分类
通用工业技术引用本文复制引用
孙铁林,孙辉,陈文剑,夏琳琳..弹性板中Lamb波在板端面的模态转换研究[J].哈尔滨工程大学学报,2013,(10):1267-1273,7.基金项目
国家自然科学基金资助项目（11204051）；中央高校基本科研专项资金资助项目（ HEUCF130502）；水声技术国家科技重点实验室基金资助项目（9140C200105120C20082）． （）
