{"title":"用于精确、高效地分析板式内置波导的波长动态刚度方法","authors":"","doi":"10.1016/j.jsv.2024.118605","DOIUrl":null,"url":null,"abstract":"<div><p>This paper proposes an efficient wavenumber dynamic stiffness method (WDSM) for exact dispersion analysis of plate built-up waveguides. Firstly, the wavenumber dynamic stiffness (WDS) matrices for inplane and out-of-plane wave motions of a plate waveguide element are developed by using the general solutions of the governing differential equations as the exact shape functions. The Wittrick–Williams (WW) algorithm is used as the eigen-solution technique to calculate dispersion relations. Furthermore, the explicit expression for the <span><math><msub><mrow><mi>J</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> term in the WW algorithm is derived, which enables the proposed method to conduct dispersion analysis of complex plate built-up waveguides with very few elements and eliminates the need for mesh refinement throughout the entire frequency range. The proposed WDSM is then applied to several examples including individual plate strip and complex plate built-up waveguides. Results are compared with existing exact solutions and those obtained by using the wave finite element method (WFEM) and the semi-analytical finite element method (SAFEM), which demonstrate the exactness and the significantly improved computational efficiency of the proposed WDSM. In conclusion, this paper presents an exact and efficient dispersion analysis method for complex plate built-up waveguides, which can be considered as a competitive alternative to numerical methods such as SAFEM and WFEM.</p></div>","PeriodicalId":17233,"journal":{"name":"Journal of Sound and Vibration","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A wavenumber dynamic stiffness method for exact and efficient dispersion analysis of plate built-up waveguides\",\"authors\":\"\",\"doi\":\"10.1016/j.jsv.2024.118605\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This paper proposes an efficient wavenumber dynamic stiffness method (WDSM) for exact dispersion analysis of plate built-up waveguides. Firstly, the wavenumber dynamic stiffness (WDS) matrices for inplane and out-of-plane wave motions of a plate waveguide element are developed by using the general solutions of the governing differential equations as the exact shape functions. The Wittrick–Williams (WW) algorithm is used as the eigen-solution technique to calculate dispersion relations. Furthermore, the explicit expression for the <span><math><msub><mrow><mi>J</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> term in the WW algorithm is derived, which enables the proposed method to conduct dispersion analysis of complex plate built-up waveguides with very few elements and eliminates the need for mesh refinement throughout the entire frequency range. The proposed WDSM is then applied to several examples including individual plate strip and complex plate built-up waveguides. Results are compared with existing exact solutions and those obtained by using the wave finite element method (WFEM) and the semi-analytical finite element method (SAFEM), which demonstrate the exactness and the significantly improved computational efficiency of the proposed WDSM. In conclusion, this paper presents an exact and efficient dispersion analysis method for complex plate built-up waveguides, which can be considered as a competitive alternative to numerical methods such as SAFEM and WFEM.</p></div>\",\"PeriodicalId\":17233,\"journal\":{\"name\":\"Journal of Sound and Vibration\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sound and Vibration\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022460X24003687\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ACOUSTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sound and Vibration","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022460X24003687","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ACOUSTICS","Score":null,"Total":0}
A wavenumber dynamic stiffness method for exact and efficient dispersion analysis of plate built-up waveguides
This paper proposes an efficient wavenumber dynamic stiffness method (WDSM) for exact dispersion analysis of plate built-up waveguides. Firstly, the wavenumber dynamic stiffness (WDS) matrices for inplane and out-of-plane wave motions of a plate waveguide element are developed by using the general solutions of the governing differential equations as the exact shape functions. The Wittrick–Williams (WW) algorithm is used as the eigen-solution technique to calculate dispersion relations. Furthermore, the explicit expression for the term in the WW algorithm is derived, which enables the proposed method to conduct dispersion analysis of complex plate built-up waveguides with very few elements and eliminates the need for mesh refinement throughout the entire frequency range. The proposed WDSM is then applied to several examples including individual plate strip and complex plate built-up waveguides. Results are compared with existing exact solutions and those obtained by using the wave finite element method (WFEM) and the semi-analytical finite element method (SAFEM), which demonstrate the exactness and the significantly improved computational efficiency of the proposed WDSM. In conclusion, this paper presents an exact and efficient dispersion analysis method for complex plate built-up waveguides, which can be considered as a competitive alternative to numerical methods such as SAFEM and WFEM.
期刊介绍:
The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application.
JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.