F-K域三层对称模型洛夫型导波频散分析

基金项目:

国家自然科学基金项目(49404053)

详细信息

F-K dispersion analysis of Love guided waves in three layered symmetry model

摘要: 导波(分瑞利型和洛夫型2种)在波导层中传播时,其能量持续时间长,而且传播过程中携带着波导层的结构信息。基于多道分析的F-K方法(频率波数域二维傅立叶变换),分析研究了3层对称模型中的洛夫型导波的频散特性,计算了理论频散曲线,并据此合成了特定频率的导波记录。通过对合成记录的F-K域分析,获得了理论模型的速度参数。从分析结果来看,速度参数与理论合成参数相一致,说明F-K方法可作为导波的频散分析。
- 导波 /
- 频散 /
- F-K /
- 洛夫波
Abstract: Due to the long persistent time of the energy of guided waves(including Love and Rayleigh waves) going through the wave guid,the structure parameters the wave brought are more interesting.The paper focuses on Love waves based on F-K method.After calculating the dispersion curve and having got the synthesis records of Love guided waves at a given frequency,having been transforming the synthesis records,we can get the velocity parameters of the wave guide through analyzing.The results are consistent with the parameters we gave before.It is indicated that the F-K method can be used for dispersion analysis of guided wave.
- guided waves /
- dispersion /
- F-K /
- Love wave

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