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| A numerical simulation method for predicting sound and vibration characteristics of big and complex cylindrical structures |
| Received:August 20, 2010 Revised:January 10, 2011 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20121022 |
| KeyWord:complex cylindrical structure vibration and noise PML simulation modeling |
| Author | Institution |
| 缪旭弘 |
中国人民解放军92857部队, 北京 |
| 王雪仁 |
中国人民解放军92857部队, 北京 |
| 贾地 |
中国人民解放军92857部队, 北京 |
| 靳国永 |
哈尔滨工程大学, 哈尔滨 |
| 庞福振 |
哈尔滨工程大学, 哈尔滨 |
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| Abstract: |
| It is much valuable to find a method for predicting the middle and high sound radiation characteristics of big and complex structures such as ships and airplanes.The Perfectly Matched Layer (PML) method is introduced and applied successfully to predict the underwater sound radiation characteristics of complex double cylindrical shell structures.Compared to the conventional coupled finite element method and boundary element method (FEM/BEM),it can reduce the fluid field model to more than 11/15 of the original.The ring frequency and the damping are two important factors for the practical cylindrical structures,and according to their effects to the vibration transmission,a modeling method for the big and complex cylindrical structures is present.Numerical results showed that the PML method and the modeling method are valid and can be applied to deal with engineering problems. |
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