| Abstract [eng] |
This master thesis deals with static analysis, of 2” ID flexible oil pipeline’s carcass layer which is the inner most bore where the fluid flows. The problem in the pipeline is the flow of crude oil inside the flexible pipe. The high temperature and pressure of oil flow inside the pipe and the pressure acting from outside of pipe due to atmospheric pressure sea wave flow causes damage to the carcass layer. This may result damage in other layers which results in spillage of crude oil in the environment especially under sea which is hazardous. Due to rather complicated wall structure where materials with very different properties are interacting, a large number of failure modes are possible. Many of these failure modes are related to design and material properties and selection. In this thesis, the 2” ID carcass layer of a flexible pipeline is described with respect to function, structure, material and possible failure modes are studied. The overall objective of this report is to a give detailed study over the carcass layer failure mode along with respect to function, structure, material and possible failure modes also this paper presents the model designed in solid works simulating the static analysis and predicting the results of displacement, stress, strain and factor of safety for the carcass layer. As a comparative study, a metal corrugated tube which also has flexible nature is modelled and analysed and brought to assumption replacing the interlock tube whether it can adapt the role of interlock tube of flexible pipes. . |
