{"title":"Simulation of Nonlinear Rayleigh Waves Propagation in Cracked Layered Elastic Medium","authors":"L. Jia, Yan Guo, Juan Huang, Bi-xing Zhang","doi":"10.1109/SPAWDA48812.2019.9019264","DOIUrl":null,"url":null,"abstract":"The nonlinear Rayleigh waves in layered half space with micro-cracks are analyzed by using finite element method. The micro-cracks close or open under the traction of Rayleigh waves. This leads that the second harmonic of Rayleigh waves can be observed after interacting with micro-cracks. For micro-cracks near the surface of structures, the second harmonics can be obtained from Rayleigh waves modes passing through micro-cracks. However, for micro-cracks in the low-velocity interlayer, the second harmonics can be obtained only when the Rayleigh waves modes at low frequency interact with micro-cracks. Besides, the level of the nonlinear effect is influenced by the length and width of micro-cracks.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"2 2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPAWDA48812.2019.9019264","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The nonlinear Rayleigh waves in layered half space with micro-cracks are analyzed by using finite element method. The micro-cracks close or open under the traction of Rayleigh waves. This leads that the second harmonic of Rayleigh waves can be observed after interacting with micro-cracks. For micro-cracks near the surface of structures, the second harmonics can be obtained from Rayleigh waves modes passing through micro-cracks. However, for micro-cracks in the low-velocity interlayer, the second harmonics can be obtained only when the Rayleigh waves modes at low frequency interact with micro-cracks. Besides, the level of the nonlinear effect is influenced by the length and width of micro-cracks.
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