| 含相互作用裂纹海洋立管疲劳寿命数值分析 |
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| 引用本文： | 杨文亮,柴宝堆,谈灵敏,周 涛.含相互作用裂纹海洋立管疲劳寿命数值分析[J].甘肃科学学报,2014(1):91-94. |
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| 作者姓名： | 杨文亮 柴宝堆 谈灵敏 周 涛 |
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| 作者单位： | [1]兰州理工大学石油化工学院,甘肃兰州730050 [2]甘肃蓝科石化高新装备股份有限公司,甘肃兰州730070 |
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| 基金项目： | 国家质检公益基金（201210026） |
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| 摘 要： | 采用ANSYS有限元软件计算含不同尺寸裂纹的海洋立管在内压和波浪力共同作用下的疲劳寿命,分析了海洋立管的疲劳寿命随裂纹几何参数的变化规律.发现对于深度a=5mm长度变化的裂纹,海洋立管的疲劳寿命随着裂纹夹角的增大逐渐减小;当裂纹之间的夹角从10°增加到50°时,疲劳寿命随裂纹长度的增加而减小的程度趋于平缓,即两裂纹之间的夹角对海洋立管疲劳寿命的影响随着裂纹夹角的增大而逐渐减弱.
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| 关 键 词： | 海洋立管 相互作用裂纹 疲劳寿命 |
Numerical Analysis of Fatigue Life of Marine Risers with Interaction Cracks |
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| YANG Wen-liang＊,CHAI Bao-dui,TAN Ling min,ZHOU Tao.Numerical Analysis of Fatigue Life of Marine Risers with Interaction Cracks[J].Journal of Gansu Sciences,2014(1):91-94. |
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| Authors: | YANG Wen-liang＊ CHAI Bao-dui TAN Ling min ZHOU Tao |
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| Institution: | School of Petrochemical Engineering, Lanzhou University of Technology ,Lanzhou 730050 ,China; 2. Lanpec Technologies Limited ,Lanzhou 730070 ,China) |
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| Abstract: | Fatigue life of a marine riser with different-size cracks under the action of internal pressure and wave force was calculated by using ANSYS,a finite element software,to analyze the variation of the fatigue life of a marine riser according to the geometric parameters of the crack. It is found that fatigue life of a ma- rine riser gradually decreases with the increase of the angle between the two cracks with the depth a=5 rnm;when the angle increases from 10° to 50°,the reduction of fatigue life of the marine riser slows down with the increase of the length of the cracks,in other words,the effects of the angle between two cracks on fatigue life of the marine riser is gradually weakened with the increase of the angle between cracks. |
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| Keywords: | Marine risers Interaction cracks Fatigue life |
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