Finite element modeling techniques for submarine pipeline lateral buckling on even seabed | |
| Author | Noppapat Tamnanjit |
| Call Number | AIT Thesis no.OTM-13-05 |
| Subject(s) | Underwater pipelines Buckling (Mechanics) Finite element method |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Offshore Technology and Management, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. OTM-13-05 |
| Abstract | The exposed pipeline on even seabed is subjec ted to the enormous axial force due to High Pressure and High Temperature (H PHT) condition. Pipeline thus te nds to buckle laterally to relieve the resulting high axial stress in pipe wall. The pipeline lateral buckling is not the failure mode in itself but causes severe mode of failure, namely, local buckling, fatigue and fracture. The Finite Element Analysis (FEA ) has been introduced to reduce the limitations of the linear analytical analysis. The simulation is perf ormed by ABAQUS program. However, for large models, time consumption has been the wea kness of FEA. Therefor e, the appropriate simulation techniques will be selected by perfo rming the sensitivity study of the relevant parameters including (i) Element Type (ii) Element Dimension (iii) Material Model (iv) Initial Pipeline Configuration (v) Geometry Behavior and (v i) Analysis Steps. The two evaluation criteria are results accuracy and less analysis time consumption comparing to the benchmark model. The most appropriate model components are no nlinear geometry, PIPE31, two pipe diameters element length, straight pipe initial configurat ion, six temperature steps and elastic material model. PIPE31 is the most effective component of analysis time reduc tion. Elastic material model is the least analysis time reduction components. |
| Year | 2013 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. OTM-13-05 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Offshore Technology and Management (OTM) |
| Chairperson(s) | Chiu, Gregory L.F. |
| Examination Committee(s) | Pornpong Asavadorndeja;Punchet Thammarak |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2013 |