| A NOVEL SEMI-ANALYTICAL METHOD FOR SOLVING ACOUSTIC RADIATION FROM LONGITUDINALLY STIFFENED INFINITE NON-CIRCULAR CYLINDRICAL SHELLS IN WATER |
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| 作者姓名： | XiangYu HuangYuying |
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| 作者单位： | [1]DepartmentofAutomotiveEngineering,GuangxiUniversityofTechnology,Liuzhou545006,China [2]CollegeofCivilEngineeringandMechanics,HuazhongUniversityofScienceandTechnology,Wuhan430074,China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(No.10172038),the Doctoral Foundation ofthe National Education Ministry(No.20040487013)and the Natural Science Foundation of Guangxi(No.0339019). |
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| 摘 要： | Based on the extended homogeneous capacity high precision integration method and the spectrum method of virtual boundary with a complex radius vector, a novel semi-analytical method, which has satisfactory computation effectiveness and precision, is presented for solving the acoustic radiation from a submerged infinite non-circular cylindrical shell stiffened by longitudinal ribs by means of the Fourier integral transformation and stationary phase method. In this work,besides the normal interacting force, which is commonly adopted by some researchers, the other interacting forces and moments between the longitudinal ribs and the non-circular cylindrical shell are considered at the same time. The effects of the number and the size of the cross-section of longitudinal ribs on the characteristics of acoustic radiation are investigated. Numerical results show that the method proposed is more efficient than the existing mixed FE-BE method.
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| 关 键 词： | 同源体积高精度积分法 光谱法 矩阵转换法 柱形壳强化 |
| 收稿时间： | 12 April 2004 |
A NOVEL SEMI-ANALYTICAL METHOD FOR SOLVING ACOUSTIC RADIATION FROM LONGITUDINALLY STIFFENED INFINITE NON-CIRCULAR CYLINDRICAL SHELLS IN WATER |
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| XiangYu HuangYuying.A NOVEL SEMI-ANALYTICAL METHOD FOR SOLVING ACOUSTIC RADIATION FROM LONGITUDINALLY STIFFENED INFINITE NON-CIRCULAR CYLINDRICAL SHELLS IN WATER[J].Acta Mechanica Solida Sinica,2005,18(1):1-12. |
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| Authors: | Xiang Yu |
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| Institution: | (1) Department of Automotive Engineering, Guangxi University of Technology, 545006 Liuzhou, China;(2) College of Civil Engineering and Mechanics, Huazhong University of Science and Technology, 430074 Wuhan, China |
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| Abstract: | Based on the extended homogeneous capacity high precision integration method and the spectrum method of virtual boundary with a complex radius vector, a novel semi-analytical method, which has satisfactory computation efectiveness and precision, is presented for solving the acoustic radiation from a submerged infnite non-circular cylindrical shell stifened by longitudinal ribs by means of the Fourier integral transformation and stationary phase method. In this work, besides the normal interacting force, which is commonly adopted by some researchers, the other interacting forces and moments between the longitudinal ribs and the non-circular cylindrical shell are considered at the same time. The efects of the number and the size of the cross-section of longitudinal ribs on the characteristics of acoustic radiation are investigated. Numerical results show that the method proposed is more efcient than the existing mixed FE-BE method. |
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| Keywords: | sound-structure interaction stifened non-circular cylindrical shell vibration and acoustic radiation semi-analytical method transfer matrix method |
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