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| Received:January 27, 2015 Revised:April 20, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201603009 |
| KeyWord:boundary element method fictitious eigenfrequency Burton-Miller method coupling parameter contour integral method |
| Author | Institution |
| 郑昌军 |
合肥工业大学 噪声振动工程研究所, 合肥 |
| 高海峰 |
太原理工大学 力学学院, 太原 |
| 杜磊 |
大连理工大学 数学科学学院, 大连 |
| 陈海波 |
中国科学技术大学 近代力学系, 合肥 |
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| Abstract: |
| A boundary element eigenvalue analysis method is developed with a contour integral method which is used to convert the boundary element nonlinear eigenvalue problems into small generalized eigenvalue problems.Numerical examples are utilized to demonstrate the accuracy of the developed method.Fictitious eigenfrequency phenomena of the conventional boundary integral equation,its normal derivative formulation and the Burton-Miller formulation are investigated through exterior acoustic examples.The actual effect of the Burton-Miller formulation on the fictitious eigenfrequency problems is revealed and the optimal choice of the coupling parameter is confirmed. |