| 海底管道受坠物撞击时的弹塑性有限元分析 |
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| 引用本文： | 杨秀娟,闫涛,修宗祥,闫相祯,冯永训.海底管道受坠物撞击时的弹塑性有限元分析[J].工程力学,2011(6):189-194. |
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| 作者姓名： | 杨秀娟 闫涛 修宗祥 闫相祯 冯永训 |
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| 作者单位： | 中国石油大学(华东)储运与建筑工程学院;胜利工程设计咨询公司; |
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| 摘 要： | 采用非线性动态有限元法模拟了坠物撞击海底管道的过程.以Ramberg-Osgood模型模拟海床,同时考虑混凝土涂层拉、压不同的非线性特性,并利用罚函数法处理坠物、海床与管道之间的相互作用.分析了物体形状、撞击角度、摩擦、内压、混凝土厚度、埋深及悬空长度对管道撞击塑性变形的影响.结果表明:坠物以尖端撞击管道时,凹痕深度较...
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| 关 键 词： | 海底管道 撞击 非线性 罚函数 凹痕 |
ELASTIC-PLASTIC FINITE ELEMENT ANALYSIS OF SUBMARINE PIPELINE IMPACTED BY DROPPED OBJECTS |
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| YANG Xiu-juan,YAN Tao,XIU Zong-xiang,YAN Xiang-zhen,FENG Yong-xun.ELASTIC-PLASTIC FINITE ELEMENT ANALYSIS OF SUBMARINE PIPELINE IMPACTED BY DROPPED OBJECTS[J].Engineering Mechanics,2011(6):189-194. |
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| Authors: | YANG Xiu-juan YAN Tao XIU Zong-xiang YAN Xiang-zhen FENG Yong-xun |
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| Affiliation: | YANG Xiu-juan1,YAN Tao1,XIU Zong-xiang1,YAN Xiang-zhen1,FENG Yong-xun2(1.College of Pipeline and Civil Engineering,China University of Petroleum,Qingdao,Shandong 266555,China,2.Shengli Engineering & Consulting Company Limited,Dongying,Shandong 257026,China) |
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| Abstract: | The process of a submarine pipeline impacted by dropped objects is simulated by using a nonlinear dynamic finite element method.The Ramberg-Osgood model is adopted to model the seabed and the different tensile and compressive nonlinear characteristics of concrete coating are considered at the same time.The interactions between the dropped object and seabed and pipeline are solved with the penalty function method.The influence of various factors on the plastic impact deformations of the pipeline are analyzed... |
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| Keywords: | submarine pipeline impact nonlinear penalty function dent |
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