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Theoretical Development of Nonlinear Spring Models for the Second Harmonics on an Interface between Two Solids 下载免费PDF全文
Based on the exact solutions for the second-harmonic generations of the fundamental longitudinal and transverse waves propagating normally through a thin elastic layer between two solids, the approximate representations termed as 'nonlinear spring models' relating the stresses and displacements on both sides of the interface are rigorously developed by asymptotic expansions of the wave fields for an elastic layer in the limit of small thickness to wavelength ratio. The applicability for the so-called nonlinear spring models is numerically analyzed by comparison with exact solutions for the second harmonic wave reflections. The present nonlinear spring models lay a theoretical foundation to evaluate the interracial properties by nonlinear acoustic waves. 相似文献
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2016年11月10-13日,由中国声学学会检测声学分会和物理声学分会主办,中国科学院声学研究所和南京大学声学所承办,云南省地球物理学会协办的2016年度全国检测声学与物理声学会议在昆明召开。中国声学学会学术委员会主任程建春、检测声学分会主任王秀明、物理声学分会主任刘晓宙、云南省地球物理学会理事长叶燎原、功率超声分会主任林书玉、检测声学分会副主任刘晓峻、物理声学分会副主任张碧星,以及来自全国各大学、科研院所、公司企业等47家单位的160多名代表参加了会议,围绕检测声学及物理声学相关的基础、应用基础及其前沿技术等热点问题展开了热烈的学术交流。 相似文献