Pipeline element for upheaval buckling analysis of submarine pipelines with geometric-imperfections under high temperature high pressure

Ning, Jihui; Liu, Siwei; Lin, Tong; Wei, Huang

doi:10.1016/j.oceaneng.2022.112456

Cited by 9 publications

(3 citation statements)

References 45 publications

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“…In our previous works, a new pipeline element based on the Euler-Bernoulli beam theory designed for pipeline buckling analysis has been proposed [26][27][28]. Compared to the traditional method that utilizes Winkler-type springs to account for soil-pipeline interaction, it has been demonstrated that the method we proposed is more efficient.…”

Section: Corrosion Modelling Of the Pipelinementioning

confidence: 99%

An Investigation on the Effect of Random Pitting Corrosion on the Strength of the Subsea Pipeline Using Monte Carlo Method

2024

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Pitting corrosion is normally distributed randomly along the pipeline, which is the source of the uncertainty affecting the ultimate bearing capacity of the submarine pipelines. So the Monte Carlo method is employed to study the effect of pitting corrosion on the upheaval buckling behavior of the pipeline. A corroded pipeline model with randomly distributed pitting corrosion is utilized to captures the intricate realities of corrosion scenarios. Multiple corrosion models with distinct artificial patterns have been meticulously crafted. Additionally, a new pipeline element based on Euler-Bernoulli beam theory is extended considering corroded sections, pipe-soil interactions, axial load, initial imperfections, and other major factors. Moreover, the bearing capacity, vertical deformation and section stress of the pipeline under corrosion is discussed thoroughly, wherein a Newton- Raphson typed numerical analysis procedure is utilized for nonlinear analysis of the upheaval buckling of pipelines. The influence of corrosion parameters such as the corrosion depth, corrosion ratio and area loss ratio on mechanical properties of the submarine pipelines is further analyzed in detail. It’s indicated that varying patterns of corrosion distribution, despite exhibiting identical corrosion parameters, can result in distinct reduction factors and vertical buckling displacements.

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Section: Corrosion Modelling Of the Pipelinementioning

confidence: 99%

An Investigation on the Effect of Random Pitting Corrosion on the Strength of the Subsea Pipeline Using Monte Carlo Method

2024

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“…As the service life of a large number of steel structures progresses, durability issues [1][2][3] related to corrosion problems come to the fore [4,5]. However, there are no operational assessment and design correction methods that take into consideration the development and effects of corrosion under different environments.…”

Section: Introductionmentioning

confidence: 99%

Residual Life Prediction and Design Correction Method of Corroded Circular Steel Tubes Based on Time-Varying Reliability

2024

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Current research on the effects of corrosion on the safety of steel members is primarily focused on the degradation of the ultimate bearing capacity, and there is a lack of research on the reliability-based service life assessment. In this paper, a modified reliability function and an uncertainty model for each parameter considering the effects of corrosion are established based on the reliability analysis method of the GB50068-2018 design specification. The effects of the corrosive environment category, wall thickness, and slenderness ratio on the time-varying reliability of axially compressed round tubes are analyzed. The results indicate that an increase in the corrosion duration and the environmental category can cause a decrease in the reliability index of the component, and the smaller the wall thickness, the faster the corrosion-related degradation of the reliability index. However, with the increase of the slenderness ratio, the corrosion-related degradation of the reliability index gradually decreases. In the end, a residual life prediction method and a design correction method for corroded components based on the reliability index are proposed. Moreover, the values of the corrosion life and corrosion coefficient of circular steel tubes for different environmental categories, slenderness ratios, and thicknesses are determined. This paper provides a technical reference for the residual life prediction and full life design of round steel tubes considering local corrosion.

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“…Pipeline systems have been widely used in the fields of engine, power system of submarines and various warships [1]. To mitigate the effects of vibration and high temperature, Metal-rubber (MR) damper cladded for pipe system is an alternative to achieve this objective [2].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer analysis and thermo-mechanical property of M-shape metal-rubber at high-temperature

Chen,

Hu,

Chen

et al. 2023

J. Phys.: Conf. Ser.

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Particular attention is given to the M-shape metal-rubber (MMR), which is a porous material with cushioning characteristics and excellent heat resistance coated in pipelines. The heat transfer characteristics and thermo-mechanical property of MMR has not been clear due to its complicated micro-porous structures and the coupling effect between structure and performance. In this work, the influence of different parameters (emissivity, density and gap distance) on the equivalent thermal conductivity of MMR were considered at the mesoscopic model level. In addition, thermal stress at different temperatures was used as predefined fields for thermal-mechanical coupling to analyze the transformations of performance. The results indicate that surface emissivity and cavity emissivity during heat transfer exhibit an inverse relationship with MMR thermal conductivity. Furthermore, it is observed that natural convection has the most significant impact on thermal conductivity. And, the thermal conductivity is negative correlation with density and gap distances. Under cyclic loading, stress concentration and plastic strain occur in MMR, and residual thermal stress is generated. The secant stiffness exhibits a positive correlation with temperature, while the loss factor demonstrates a negative correlation, primarily due to thermal expansion.

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Pipeline element for upheaval buckling analysis of submarine pipelines with geometric-imperfections under high temperature high pressure

Cited by 9 publications

References 45 publications

An Investigation on the Effect of Random Pitting Corrosion on the Strength of the Subsea Pipeline Using Monte Carlo Method

An Investigation on the Effect of Random Pitting Corrosion on the Strength of the Subsea Pipeline Using Monte Carlo Method

Residual Life Prediction and Design Correction Method of Corroded Circular Steel Tubes Based on Time-Varying Reliability

Heat transfer analysis and thermo-mechanical property of M-shape metal-rubber at high-temperature

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