| T型管节点表面裂纹应力强度因子的全三维有限元分析 |
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| 引用本文： | 王自力 刘康林 等. T型管节点表面裂纹应力强度因子的全三维有限元分析[J]. 哈尔滨工程大学学报, 1995, 16(2): 31-37 |
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| 作者姓名： | 王自力 刘康林 等 |
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| 摘 要： | 利用完全的三维有限元分析方法对T型管节点轴载下的复合应力强度因子进行了计算。T型管节点有限元网络由自编的FEMAUTOP程序实现自动生成。考虑到裂纹尖端处的应力奇异性，在裂尖区域采有了三维四分之一分点20节点等参退化奇异单元，其它区域则采用高精度的20节点等参元。在利用线性结构有限元微机分析程度PCSAP5进行计算后，再使用后处理程度SIF对理解纹尖端处的应力强度因子进行了分析。
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| 关 键 词： | 海洋平台 管节点 应力强度因子 有限元 T型管节点 裂纹 |
Stress Intensity Factors Computation of T-shaped Tubular Joint |
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| Wang Zili, Liu Kanglin, Li Weiyang. Stress Intensity Factors Computation of T-shaped Tubular Joint[J]. Journal of Harbin Engineering University, 1995, 16(2): 31-37 |
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| Authors: | Wang Zili Liu Kanglin Li Weiyang |
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| Affiliation: | Dept. of Naval Arch. and Ocean Eng. |
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| Abstract: | The fully mixed- mode stress intensity factors of tubular joints With brace subjected totension are calculated by three - dimensional finite element method. At first, the finite elementmesh of the tubular joints are performed by FEMAUTOP, which is a pre - processing processing program designed for the finite element meshing of T- joints. Owing to the existence ofthe stress singularities, 3 - D prismatic 20- node quarter point elements are used for the regionnear the crack tip, and 20- node isoparametric elements for the other tubtilar parts. This modelis analysed by PCSAPS(a large general structure analysis program). Findly, the stress intensityfactors are calculated by program SIF. |
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| Keywords: | Offshore platform Tubular joint Stress intensity factor Finite element |
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