海底管道屈曲传播中管壁与扣入式止屈器非线性接触问题研究
发布时间：2019-02-18 13:26
【摘要】：运用二维环模型模拟管道,采用非线性离散弹簧模型模拟了管道外壁与扣入式止屈器内壁之间的接触.建立了其结构的弹塑性本构关系,构建了海底管道二维屈曲接触力学模型,研究分析了海底管道在屈曲和管壁接触过程中的承载力、结构变形以及截面应力分布等的变化规律.为了验证该理论分析方法的准确性,将理论分析结果与ABAQUS软件的模拟结果进行了对比,结果吻合良好;最后,将理论计算得到的屈曲压溃压力和屈曲传播压力分别与ABAQUS软件模拟结果及全比例管道屈曲试验进行了对比,证明了该理论方法的可靠性.该理论研究为进一步研究管道的屈曲传播力学机制和止屈技术奠定了基础.
[Abstract]:The two dimensional ring model is used to simulate the pipe and the nonlinear discrete spring model is used to simulate the contact between the outer wall of the pipe and the inner wall of the buckle type buckler. The elastoplastic constitutive relation of the structure is established, the two-dimensional buckling contact mechanics model of submarine pipeline is established, and the variation of bearing capacity, structural deformation and cross-section stress distribution of submarine pipeline in the process of buckling and pipe wall contact are studied. In order to verify the accuracy of the theoretical analysis method, the theoretical analysis results are compared with the simulation results of ABAQUS software, and the results are in good agreement. Finally, the calculated buckling pressure and buckling propagation pressure are compared with the simulation results of ABAQUS software and the full-scale pipeline buckling test, respectively, and the reliability of the theoretical method is proved. The theoretical study lays a foundation for further study on the mechanism of buckling propagation and anti-buckling technique.
【作者单位】： 天津大学水利工程仿真与安全国家重点实验室;上海交通大学高新船舶与深海开发装备协同创新中心;海洋石油工程股份有限公司;中国海洋大学工程学院;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2014CB046804) 国家自然科学基金资助项目(51239008)~~
【分类号】：P756.2
本文编号：2425883
[Abstract]:The two dimensional ring model is used to simulate the pipe and the nonlinear discrete spring model is used to simulate the contact between the outer wall of the pipe and the inner wall of the buckle type buckler. The elastoplastic constitutive relation of the structure is established, the two-dimensional buckling contact mechanics model of submarine pipeline is established, and the variation of bearing capacity, structural deformation and cross-section stress distribution of submarine pipeline in the process of buckling and pipe wall contact are studied. In order to verify the accuracy of the theoretical analysis method, the theoretical analysis results are compared with the simulation results of ABAQUS software, and the results are in good agreement. Finally, the calculated buckling pressure and buckling propagation pressure are compared with the simulation results of ABAQUS software and the full-scale pipeline buckling test, respectively, and the reliability of the theoretical method is proved. The theoretical study lays a foundation for further study on the mechanism of buckling propagation and anti-buckling technique.
【作者单位】： 天津大学水利工程仿真与安全国家重点实验室;上海交通大学高新船舶与深海开发装备协同创新中心;海洋石油工程股份有限公司;中国海洋大学工程学院;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2014CB046804) 国家自然科学基金资助项目(51239008)~~
【分类号】：P756.2
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