| 近海平台管状接头弹一塑性有限元分析 |
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| 引用本文： | 吴水云,陈铁云. 近海平台管状接头弹一塑性有限元分析[J]. 上海交通大学学报, 1987, 0(5) |
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| 作者姓名： | 吴水云 陈铁云 |
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| 作者单位： | 上海交通大学船舶及海洋工程系，上海交通大学船舶及海洋工程系 |
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| 摘 要： | 本文采用拟协调元、分层子单元和拟子结构列出了近海平台管状接头弹-塑性有限元分析的列式,同时在高斯消去法中运用改进的顺序-逆序修正、分块等技巧,在每个载荷增量步中仅需对进入塑性区范围的静力方程进行求解。文中介绍了 T 型及 Y 型管状接头的数值计算结果并与 T 型管状接头的实验结果进行了比较,结果是相当接近的。
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| 关 键 词： | 海洋平台 管接头 应力分析 弹-塑性 有限元分层子单元 拟协调元 拟子结构 |
Elastic-plastic Finite Element Analysis of Tubular Joints for Offshore Drilling platforms |
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| Wu Shuiyun Chen Tieyun. Elastic-plastic Finite Element Analysis of Tubular Joints for Offshore Drilling platforms[J]. Journal of Shanghai Jiaotong University, 1987, 0(5) |
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| Authors: | Wu Shuiyun Chen Tieyun |
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| Affiliation: | Wu Shuiyun Chen Tieyun |
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| Abstract: | The formulas of elastic-plastic finite element analysis of tubular joints on offshore platforms are presented in this paper by appling the techniques of quasi-conforming element,layered subelement and quasi-substructuring.Meanwhile,the forward-backward sequence modification approach in blocks is used in the Gauss elimination method in order to restrict the solution of statically equilibrium equations in the plastic zones during each increase of leading.Some numerical computations of tubular T-joints and Y-joints were carried out and computational results were compared with the experimental results.They are quite close to each other |
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| Keywords: | offshore platform tubular joint stress analysis elastic-plastic finite element layered subelement quasi-conforming element quasi-substructure |
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