... against hydrostatic pressure, especially during installation. Selker et al. (2022, 2023) have developed an improved method for predicting the collapse pressure and compared their analytical results with the outcome of finite-element analyses. In this paper, the performance of the improved model...

... of collapse pressure and propagation pressure is achieved. The comparison between the VFIFE results and other methods (DNVGL-ST-F101, API RP 1111, the empirical formula, and parallel ABAQUS simulations) proves that the excellent applicability of the VFIFE method in offshore pipeline collapse and propagation...

... walls. Collapse-pressure predictions are increasingly conservative for lower D / t . By following the standard, pipelines operating in ultra-deep water may be over-dimensioned. This can culminate in manufacturing requirements that adversely affect project economics or threaten the technical feasibility...

... midstream oil & gas pipeline rasheed united states government external pressure thickness upstream oil & gas offshore pipeline karampour cylinder north america government collapse pressure composite pipeline orientation propagation fea result proceedings fiber...

... surveillance production control pipeline subsea system upstream oil & gas production monitoring installation integrity pipe joint water depth line pipe coating black sea turkstream pipeline collapse resistance strength wall thickness chaudhuri requirement resistance collapse pressure...

... midstream oil & gas collapse pressure faceted pipeline conventional pipeline engineering pipeline faceted pipe triangular facet fe model titanium sample offshore pipeline albermani external pressure hyperbaric chamber coupon sample pipeline sample upstream oil & gas pipe...

... close parts of the carcass layer causing erosion, leading to thinning of the steel strip of the carcass layer and reducing the pressure collapse resistance of the carcass layer. The carcass layer will have serious consequences in the event of a collapse failure. The collapse pressure of flexible pipes...

.... piping simulation strength offshore pipeline collapse pressure piping design midstream oil & gas metals & mining upstream oil & gas girth weld application external pressure equation load capacity pipe thick-walled pipe bending-moment capacity design equation bending-strain...

... depths. When pipe walls are becoming thinner, this makes the pipeline more susceptible to collapse. It has been found that, in some cases, the DNVGL-ST-F101 formulations that aim at predicting the collapse pressure of relatively thin-walled pipelines can lead to nonconservative results...

... cylinder numerical analysis cylindrical hull ansy 5 ansy 16 critical pressure state design boote submarine vehicle collapse pressure thickness defect Buckling Numerical Analysis of Stiffened Cylindrical Structures Gianmarco Vergassola, Dario Boote, Chiara Manca. DITEN, University of Genoa...

... ABSTRACT This study investigates collapse mechanisms of the inner pipe of a pipe-in-pipe (PIP) system under external hydrostatic pressure. It is observed that the geometric and material properties of the outer pipe affect the collapse pressure of the inner pipe ( P ci ). A finite element...

... under the weld-induced geometric imperfection were studied. It is noted that the collapse pressure from the welded structures models are lower than the existing theoretical prediction. The reason for this is mainly because the elastic buckling equation does not include the effect of initial imperfection...

... strip flexible pipe configuration knowledge management pipe requirement cross section external pressure cross-sectional design case study midstream oil & gas collapse pressure Cross-sectional Design and Case Study for an 8-Inch Metallic Strips Flexible Pipe Peihua Han, Ting Liu, Shuai...

... ABSTRACT The collapse pressures of cold formed pipes with rounded stress vs. strain curves in the circumferential direction are evaluated using collapse tests and finite element analyses. A novel prediction method to estimate the collapse pressures of cold formed pipes is discussed. A new...

... Abstract Reeling lay or R-lay is a popular technique for effectively installing ERW line pipes in deepwater. This paper explores the ovality and the collapse pressure of HF-ERW line pipes installed by reeling lay. The change of ovality is evaluated by a full-scale bending-unbending test...

... collapse pressure. Rafael Fumis(2012) presented a modeling approach to simulate the flexible pipe undergoing combined compression, curvature and pressure loading, which was compared with a full scale sample test data. Due to the complex response and interaction between multiple layers within the unbonded...

... Abstract Line pipes installed via reel laying (R-lay) must exhibit collapse resistance to external pressure in addition to deformability during reeling and unreeling processes. In this study, we analyze the collapse resistance, collapse pressure, and collapse mechanism of line pipes...

... Abstract A comprehensive study was conducted on the collapse mechanism of rings cut off from line pipe specimens. It was theoretically established that a ring without end restraints should have a lower collapse pressure value than an equivalent full-scale joint. However, similar collapse...

...-pressurized thick-walled pipes is examined, using finite element simulation tools. uoe process pipeline simulation thickness ovalization manufacturing process seamless pipe application collapse pressure uoe manufacturing process curvature kyriakide external pressure plateau region initial...

... investigation. The measured pipe geometries confirmed low ovality and eccentricity of UOE pipes. resistance offshore pipeline reduction pipe material collapse pressure pipe mechanical property diameter upstream oil & gas compression test variation ovality local variation uoe pipe...