| 基于ANSYS的海洋平台局部构造疲劳寿命评估的网格精度和外推方法研究 |
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| 引用本文： | 冯加果,李新仲,谢彬,王世圣,谢文会,刘小燕.基于ANSYS的海洋平台局部构造疲劳寿命评估的网格精度和外推方法研究[J].石油矿场机械,2011,40(1):15-20. |
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| 作者姓名： | 冯加果 李新仲 谢彬 王世圣 谢文会 刘小燕 |
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| 作者单位： | 1. 中海油研究总院,北京,100027
2. 天津大学,建筑工程学院,天津,300072 |
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| 基金项目： | 中国海洋石油总公司综合科研项目“深水油气田开发工程浮式平台设计技术研究”(2007KJB-0.5) |
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| 摘 要： | 应力幅值是评估疲劳寿命的关键数据之一,对于海洋平台局部构造应力幅值的计算结果依赖于ANSYS有限元分析的网格精度和热点应力外推方法。对海洋平台局部构造模型不同网格精度和不同外推方法对热点应力幅值的影响进行了研究,网格精度对应力幅值影响较大,外推方法的影响不明显。给出的网格精度和外推方法建议可为海洋平台局部构造疲劳寿命评估提供参考。
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| 关 键 词： | ANSYS 局部构造 裙桩套筒 网格精度 热点应力外推法 |
Grid Precision and Extrapolation Method of Fatigue Life Assessment of Local Constructions of Offshore Platforms by ANSYS |
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| FENG Jia-guo,LI Xin-zhong,XIE Bin,WANG Shi-sheng,XIE Wen-hui,LIU Xiao-yan.Grid Precision and Extrapolation Method of Fatigue Life Assessment of Local Constructions of Offshore Platforms by ANSYS[J].Oil Field Equipment,2011,40(1):15-20. |
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| Authors: | FENG Jia-guo LI Xin-zhong XIE Bin WANG Shi-sheng XIE Wen-hui LIU Xiao-yan |
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| Affiliation: | FENG Jia-guo1,LI Xin-zhong1,XIE Bin1,WANG Shi-sheng1,XIE Wen-hui1,LIU Xiao-yan2(1.CNOOC Research Institute,Beijing 100027,China,2.School of Civil Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | The calculation of stress amplitude which is a key data of the fatigue life assessment depends on the grid precision and hot spot stress extrapolation method in the ANSYS finite element analysis of the local constructions of the offshore platforms.The impact on the hot spot stress amplitude of the local constructions of the offshore platforms was discussed by the different grids and different extrapolation methods.The results showed that the grid precision very affected the stress amplitude and the impact o... |
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| Keywords: | ANSYS local construction skirt pile sleeve grid precision hot spot stress extrapolation method |
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