Dynamic Buckle Propagation in Submarine Pipelines

在拟议的研究中，屈曲传播的动力学和 在海底管道的逮捕将调查使用一个 数值、实验和分析相结合 接近。 研究的目标包括： 对屈曲传播的理解的进步， 逮捕现象，并发展相对简单的模型 可以在实践中用来设计安全、高效的 管道系统。 这项研究将包括三项主要任务。 在任务1中， 管道屈曲的传播和制动将通过 一个三维的，高精度的有限元模型 这就可以解释 周向变形和纵向弯曲， 剪切变形 任务2将涉及实验 动态条件下典型管道-晶闸管系统的试验 条件 最后，任务3将处理 简化模型，以可接受的精度表示 主要因素的影响和相对重要性， 影响屈曲传播和制动现象。 这些简化的模型主要是为了实用 设计目的。 这项研究将提供的结果， 导致更经济和有效的设计的发展 海上管道系统，从而提高可用性， 稳定的能源。

In the proposed research, the dynamics of buckle propagation and arrest in submarine pipelines will be investigated using a combination of numerical, experimental, and analytical approaches. The objectives of the research include the advancement of the understanding of the buckle propagation and arrest phenomena, and the development of relatively simple models which could be used in practice to design safe and efficient pipeline systems. The research will consist of three main tasks. In Task 1, pipeline buckle propagation and arrest will be studied by means of a three-dimensional, highly accurate finite element model which will account for the energies dissipated by both circumferential deformations and longitudinal bending and shearing deformations. Task 2 will involve the experimental testing of representative pipeline-arrestor systems under dynamic conditions. Finally, Task 3 will deal with the development of simplifies models which will represent with acceptable accuracy the effects and relative importance of the major factors that influence the buckle propagation and arrest phenomena. These simplifies models are primarily intended for practical design purposes. This research will provide results that will lead to the development of more economical and efficient designs of offshore pipeline systems, thus enhancing the availability of a stable energy source.