| SPSM and its application in cylindrical shells |
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| 作者姓名： | 聂武 周素莲 彭辉 |
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| 作者单位： | College of Shipbuilding Engineering Harbin Engineering University，College of Shipbuilding Engineering Harbin Engineering University，Ship Engineering Department Bohai Shipbuilding Vocational College，Harbin 150001 China，Harbin 150001 China，Huludao 125000 China |
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| 摘 要： | In naval architectures, the structure of prismatic shell is used widely. But there is no suitable method to analyze this kind of structure. Stiffened prismatic shell method (SPSM) presented in this paper, is one of the harmonic semi-analytic methods. Theoretically, strong stiffened structure can be analyzed economically and accurately. SPSM is based on the analytical solution of the governing differential equations for orthotropic cylindrical shells. In these differential equations, the torsional stiffness, bending stiffness and the exact position of each stiffener are taken into account with the Heaviside singular function. An algorithm is introduced, in which the actions of stiffeners on shells are replaced by external loads at each stiffener position. Stiffened shells can be computed as non-stiffened shells. Eventually, the displacement solution of the equations is acquired by the introduction of Green function. The stresses in a corrugated transverse bulkhead without pier base of an oil tanker are computed by using SPSM.
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| 关 键 词： | 柱形壳 应力分析 船舶工程 设计方案 |
SPSM and its application in cylindrical shells |
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| Wu?Nie,Su-lian?Zhou,Hui?Peng.SPSM and its application in cylindrical shells[J].Journal of Marine Science and Application,2008,7(1):40-47. |
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| Authors: | Wu Nie Su-lian Zhou Hui Peng |
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| Institution: | [1]College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China [2]Ship Engineering Department, Bohai Shipbuilding Vocational College, Huludao 125000, China |
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| Abstract: | In naval architectures, the structure of prismatic shell is used widely. But there is no suitable method to analyze this kind of structure. Stiffened prismatic shell method (SPSM) presented in this paper, is one of the harmonic semi-analytic methods. Theoretically, strong stiffened structure can be analyzed economically and accurately. SPSM is based on the analytical solution of the governing differential equations for orthotropic cylindrical shells. In these differential equations, the torsional stiffness, bending stiffness and the exact position of each stiffener are taken into account with the Heaviside singular function. An algorithm is introduced, in which the actions of stiffeners on shells are replaced by external loads at each stiffener position. Stiffened shells can be computed as non-stiffened shells. Eventually, the displacement solution of the equations is acquired by the introduction of Green function. The stresses in a corrugated transverse bulkhead without pier base of an oil tanker are computed by using SPSM. |
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| Keywords: | stiffened shell stress analysis singular function Green function corrugated bulkhead |
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