| Parametric Analysis of A Submerged Cylindrical Shell Subjected to Shock Waves |
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| 作者姓名： | 李上明 FAN Sau-Cheong |
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| 作者单位： | Engineering Mechanics Research Center School of Civil Engineering and Architecture，Nanchang University，Protective Technology Research Center，School of Civil and Environmental Engineering，Nanyang Technological University，Nanchang 330031，China，8Nanyang Avenue，639798，Singapore |
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| 摘 要： | In this study,an FEM-SBFEM(scaled boundary finite element method)coupling procedure proposed by Fan et al.(2005)is adopted to obtain the dynamic responses of a submerged cylindrical shell subjected to plane step or exponential acoustic shock waves.The coupling procedure can readily be applied to three-dimensional problem,however for clarity,the problems to be presented are limited to two-dimensional domain.In the analyses,the cylindrical shell is modeled by simple beam elements(using FEM),while the effects of the surrounding infinite fluid is modeled by the SBFEM.In it,no free surface and seabed are involved.Compared with Fan and his co-authors' works,the FEM-SBFEM coupling procedure is further verified to be feasible for shock waves by benchmark examples.Furthermore,parametric studies are performed and presented to gain insight into effects of the geometric and material properties of the cylindrical shell on its dynamic responses.
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| 关 键 词： | 水下圆筒壳体 激波 参数分析 FEM-SBFEM法 |
| 收稿时间： | 2006-05-29 |
| 修稿时间： | 2007-01-08 |
Parametric Analysis of A Submerged Cylindrical Shell Subjected to Shock Waves |
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| LI Shang-ming,FAN Sau-Cheong.Parametric Analysis of A Submerged Cylindrical Shell Subjected to Shock Waves[J].China Ocean Engineering,2007,21(1):125-136. |
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| Authors: | LI Shang-ming FAN Sau-Cheong |
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| Abstract: | In this study,an FEM-SBFEM(scaled boundary finite element method)coupling procedure proposed by Fan et al.(2005)is adopted to obtain the dynamic responses of a submerged cylindrical shell subjected to plane step or exponential acoustic shock waves.The coupling procedure can readily be applied to three-dimensional problem,however for clarity,the problems to be presented are limited to two-dimensional domain.In the analyses,the cylindrical shell is modeled by simple beam elements(using FEM),while the effects of the surrounding infinite fluid is modeled by the SBFEM.In it,no free surface and seabed are involved.Compared with Fan and his co-authors' works,the FEM-SBFEM coupling procedure is further verified to be feasible for shock waves by benchmark examples.Furthermore,parametric studies are performed and presented to gain insight into effects of the geometric and material properties of the cylindrical shell on its dynamic responses. |
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| Keywords: | cylindrical shell FEM-SBFEM coupling shock wave infinite fluid parametric study |
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