A three-dimensional analytical solution for sandwich pipe systems under linearly varying external pressures

Jin Zhijiang; Shen Xiaoli; Yan Sunting; Ye Hao; Gao Zhixin; Chen Zhanfeng

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A three-dimensional analytical solution for sandwich pipe systems under linearly varying external pressures

机译：线性变化的外部压力下三明治管系统的三维解析解

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A three-dimensional analytical model is presented to calculate the stress and deformation of a sandwich pipe (SP) system subjected to linearly varying external pressures. Based on a stress function method, an analytical solution for a thick-walled pipe was researched, and then an analytical solution for a SP system was obtained according to the boundary and continuity conditions of stress and displacement. Furthermore, the analytical solution of a SP system was verified by comparing with finite element method (FEM). The results indicate that the stresses from present method (PM) are in a good agreement with that from FEM. Finally, our researches provide a benchmark for approximate or nutherical solutions, and are beneficial to evaluate the safety and integrality of SP systems. (C) 2016 Elsevier Ltd. All rights reserved.

机译：提出了一个三维分析模型来计算承受线性变化的外部压力的三明治管系统的应力和变形。基于应力函数方法，研究了厚壁管的解析解，然后根据应力和位移的边界条件和连续性条件获得了SP系统的解析解。此外，通过与有限元方法（FEM）的比较，验证了SP系统的解析解。结果表明，本方法（PM）的应力与FEM的应力良好吻合。最后，我们的研究为近似或数值解提供了基准，并有助于评估SP系统的安全性和完整性。（C）2016 Elsevier Ltd.保留所有权利。

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来源
《Ocean Engineering》 |2016年第15期|298-305|共8页
作者
Jin Zhijiang; Shen Xiaoli; Yan Sunting; Ye Hao; Gao Zhixin; Chen Zhanfeng;
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作者单位

Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China;

Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China;

Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China;

Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China;

Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China;

Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Sandwich pipe system; Pipe integrality; Linear load; Analytical solution; Stress function;

机译：三明治管系统;管道完整性;线性载荷;解析解;应力函数;

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A three-dimensional analytical solution for sandwich pipe systems under linearly varying external pressures

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