文献类型：期刊文献

英文题名：Modeling and simulation of static component generation of Lamb wave propagation in a layered plate

作者：Chen, Han[1];Deng, Mingxi[2];Gao, Guangjian[1];Hu, Ning[2];Xiang, Yanxun[3]

机构：[1]Army Logist Acad, Dept Phys, Chongqing 401331, Peoples R China;[2]Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：116

外文期刊名：ULTRASONICS

收录：;EI(收录号：20212410494881);WOS:【SCI-EXPANDED(收录号:WOS:000681635000001)】；

基金：This work was supported by the National Natural Science Foundation of China under Grant Nos. 12074050, 11834008, 11704410, 11632004, and U1930202.

语种：英文

外文关键词：Lamb wave; Layered plate; Static component (SC); Interfacial property; Finite element (FE) simulation

摘要：Modeling of the acoustic-radiation-induced static component (SC) generation of primary Lamb wave tone burst propagating in a layered plate is conducted. Accompanying the propagation of primary Lamb wave tone burst, there are the finite-duration SC bulk driving force in the interior of the layered plate, and the finite-duration SC traction stress on each surface/interface. According to the modal analysis approach for waveguide excitation, the function of the finite-duration SC bulk driving force and traction stress is to generate the finite-duration SC of primary Lamb wave tone burst. Compared with the second harmonic (SH) generation of Lamb wave propagation in a layered plate, the phase velocity matching is no longer required for the generation of the SC with a cumulative growth effect. Based on modeling of the finite-duration SC generation, it is found that the integrated amplitude of the finite-duration SC generated by propagation of the primary Lamb wave tone burst does grow with propagation distance. Meanwhile, the numerical analyses and the finite element (FE) simulations are conducted to investigate the effect of the said SC generation. It is found that, although the interfacial layer of the layered plate considered is quite thin compared with the upper and lower layers, the numerical analyses indicate that the influence of the interfacial property on the cumulative growth effect of the SC of primary Lamb wave is significant. Furthermore, the FE simulations demonstrate that the cumulative SC of primary Lamb wave tone burst will exhibit a monotonic and sensitive response to the degree of interfacial degradation. This investigation provides an physical insight not previously available into the process of the SC generation of Lamb wave propagation in a layered plate.