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| 初始几何缺陷在海底管道整体屈曲数值建模中的引入方法 | |
| 引用本文： | LIU Yüxiao,GE Tao,LI Xin,ZHOU Jing.初始几何缺陷在海底管道整体屈曲数值建模中的引入方法[J].水资源与水工程学报,2011,22(3):32-35. |
| 作者姓名： | LIU Yüxiao GE Tao LI Xin ZHOU Jing |
| 作者单位： | 1. 山东工商学院管理科学与工程学院,山东烟台,264005 2. 山东工商学院工商管理学院,山东烟台,264005 3. 大连理工大学,海岸与近海工程国家重点实验室,辽宁大连116023 |
| 基金项目： | 国家自然科学基金重点项目，教育部重大项目 |
| 摘 要： | 对于管道后屈曲的研究通常采用有限元方法,基于有限元分析软件建立的海底管道整体屈曲分析的有限元模型必须引入几何缺陷。针对建模过程中初始几何缺陷的引入方法对管道前屈曲及后屈曲的影响,本文基于ANSYS建立了平坦海床上裸铺管道的非线性有限元模型,详细介绍了建模过程中初始几何缺陷的引入方法,并对几何缺陷的引入方法进行了对比分析。分析表明管道形成初始几何缺陷引起的残余应力对管道屈曲的临界温差及最大轴向总应变有明显影响,对管道后屈曲的变形及弯矩影响不大。 |
| 关 键 词： | 海底管道 整体屈曲 几何缺陷 残余应力 轴向总应变 临界温差 |
Introduction method of initial geometric imperfection in the numeral model of subsea pipeline global buckling |
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| LIU Yüxiao,GE Tao,LI Xin,ZHOU Jing.Introduction method of initial geometric imperfection in the numeral model of subsea pipeline global buckling[J].Journal of water resources and water engineering,2011,22(3):32-35. | |
| Authors: | LIU Yüxiao GE Tao LI Xin ZHOU Jing |
| Affiliation: | LIU Yüxiao1a,GE Tao1b,LI Xin2,ZHOU Jing2(1a.Management Science and Engineering Institute,1b.Business Adminitration Institute,Shandong Institute of Business and Technology,Yantai 264005,China,2.State Key Laboratory ofCoastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China) |
| Abstract: | Finite element method is used for pipeline post-buckling analysis pipeline.Initial seometric imperfection is very important in pipeline global buckling.In order to reveal the effect of introducing method for building model on pre-buckling and post-buckling,FEM of pipeline exposed on seabed is built based on ANSYS;introducing method of initial seomeeric imperfection is presented and compared.Analysis shows that residual stress have obvious effect on critical temperature difference and maximum axial total str... |
| Keywords: | submarine pipeline global buckling geometric imperfection residual stress maximum axial and total strain critical temperature differential |
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