Acoustic eigenanalysis for multiply-connected problems using dual BEM

J. T. Chen, L. W. Liu, S. W. Chyuan

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

In this paper, the eigenanalysis for the multiply-connected domain problem is studied by using the dual boundary element method. The occurrence and treatment of the spurious eigenvalues for multiply-connected domain problem are reviewed when the complex-valued BEM in used. Three approaches, Burton and Miller method, CHIEF concept and SVD updating techniques, are adopted to suppress the occurrence of spurious eigensolutions. Instead of using the singular and hypersingular formulations, the singularity-free methods, the null-field equation approach and the fictitious BEM, are also utilized to deal with the eigenproblem. Both the eigenvalues and eigenmodes are compared with the analytical solutions and those of FEM for the illustrative examples. Good agreement is made.

原文English
頁(從 - 到)419-440
頁數22
期刊Communications in Numerical Methods in Engineering
20
發行號6
DOIs
出版狀態Published - 2004 六月

All Science Journal Classification (ASJC) codes

  • 軟體
  • 建模與模擬
  • 工程 (全部)
  • 計算機理論與數學
  • 應用數學

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