| 薄壁管道表面裂纹的应力强度因子计算 |
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| 引用本文： | 署恒木.薄壁管道表面裂纹的应力强度因子计算[J].油气储运,2001,20(3):25-28. |
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| 作者姓名： | 署恒木 |
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| 作者单位： | 石油大学山东 |
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| 摘 要： | 在已进行过的关于管道表面裂纹的应力强度因子计算工作中，都只局际于化工或核工业使用的厚壁管道，对于输送油气的薄壁管道其表面裂纹庆力强度因子尚未见到有关文献报道，用有限单元法计算了超薄壁管道中一些轴向和环向表面裂纹尖端的应力强度因子，给出了近似计算公式，并对结果进行了分析讨论，对于轴向裂纹与外面裂纹的应力强度因子基本相同，内表面裂纹的略大一点，两条裂纹的应力强度因子比单条裂纹的略大一点。
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| 关 键 词： | 油气管道 薄壁管道 表面裂纹 应力强度因子 有限单元法 计算 |
Stress Intensity Factors for Surface Cracks in Thin Pipes. |
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| Shu Hengmu.Stress Intensity Factors for Surface Cracks in Thin Pipes.[J].Oil & Gas Storage and Transportation,2001,20(3):25-28. |
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| Authors: | Shu Hengmu |
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| Abstract: | Although much attention has been paid to the calculation of stress intensity factors (SIFs ) on pipe cracks,the SIFs of surface cracks in thin oil and gas pipes have not been published. Three-dimensional finite element analysis has been conducted to calculate the SIF for longitudinal and circumference surface cracks in thin pipes (internal radius wall thickness >30). and the approximate calculation equations have been obtained. The results can be used for the integrity assessments of oil and gas pipes. |
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| Keywords: | thin pipes stress intensity factors finite element method calculation |
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