FEM-based evaluation of friction and initial imperfections effects on sandwich pipes local buckling

Fernández-Valdés, D.; Vázquez-Hernández, A.O.; Ortega-Herrera, J.A.; Ocampo-Ramírez, Arturo; Hernandez, D. Paredes

doi:10.1016/j.marstruc.2020.102769

Cited by 15 publications

(5 citation statements)

References 16 publications

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“…4(b), the stress in the middle section of the DP shows higher values than other sections because of the interaction between the DP and slip inserts. For a certain part of the DP, it is interesting that the stress of the inner surface is higher than that of the outer surface, which coincides with the theoretical results presented in Section 2.2 as well as the works conducted by Bai et al (2016), Wang and Koizumi (2017), Alrsai et al (2018), andFernández-Valdés et al (2020). Fig.…”

Section: Stress Responses Of the Dp-slip Systemsupporting

confidence: 87%

Finite Element Analysis of Drill Pipe-Slip System

et al. 2022

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Section: Stress Responses Of the Dp-slip Systemsupporting

confidence: 87%

Finite Element Analysis of Drill Pipe-Slip System

et al. 2022

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“…Terefore, Ω 0 i (r 1 0 , t) and Ω n im (r 1 0 , t) are determined. By reusing equations ( 23) and (24), Ω 0 i (r i h , t) and Ω n im (r i h , t) are obtained:…”

Section: Coefcient Determination By Recursive Matrix Methodmentioning

confidence: 99%

“…Zhu et al [23] analyzed a new GFRP laminated tube with a stifened core under burial condition in a theoretical way, and they also found a way to improve the strength-to-weight ratio of the tubes by optimizing the geometric parameters. Fernandez-Valdes et al [24] presented the analysis of friction and initial imperfection of the sandwich tubes by virtue of the FE method. Closed-form analytical solutions of sandwich tubes containing functionally graded interlayers were presented by Sburlati and Kashtalyan [25] based on the elasticity theory, and the results indicated the graded interlayers can remarkably reduce the hoop stress in the tube.…”

Section: Introductionmentioning

confidence: 99%

Efficient Analytical Model for Long‐Term Performance of Laminated Tube with Viscoelastic Interlayer by Quasi‐Elastic Approximation

Qin

Yue

2023

Mathematical Problems in Engineering

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An efficient analytical method is proposed so as to study the long-term performance of laminated tubes with neighboring layers glued by viscoelastic interlayers bearing inhomogeneous long-duration loads. In the analysis, the formulations for describing the mechanical performance of each tube layer are based on the elasticity theory, while the viscoelastic behavior of the glue interlayer is modeled by the generalized Maxwell model. Making use of the quasielastic approximation and the recursive matrix method, the analytical solution for the long-term performance of the laminated tube is solved efficiently. The present analytical solution is verified by comparing it with other solutions. The influences of the interlayer thickness, the material property, as well as the load distribution on the long-term performance of the laminated tube are discussed.

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“…xx LL  = − + (7) in which, L represents the length of an element and x is the coordinate in the xaxis.…”

Section: Element Forces and Deformationsmentioning

confidence: 99%

“…Nevertheless, such design consideration is sometimes difficult because it is significantly affected by several crucial factors, including the initial out-of-plumpness of pipelines, the depth of buried soils, and the tightness of seabed etc., leading to the rigorous analysis of upheaval buckling difficult. This topic has gained continuous attentions and studied by several researchers for a decade [7][8][9][10][11], which is still popular up to date. Experiments on studying subsea buried pipeline buckling have been initiated in the mid-1990s.…”

Section: Introductionmentioning

confidence: 99%

Line-Element Formulation for Upheaval Buckling Analysis of Buried Subsea Pipelines Due to Thermal Expansion

Ning¹,

Liu

Wan³

et al. 2021

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Subsea pipeline is the critical component in the offshore systems for transporting oil and gas from resource sites to ports. Its structural failure will be a disaster of heavily polluting the environment leading to unpredictable losses. The mediums inside subsea pipelines are conventionally heated in service for easier transporting after increasing fluidity, resulting in accumulative thermal expansion of the pipeline to induce thermal expansion, triggering upheaval buckling. It is crucial when designing subsea pipelines but always challenging to evaluate rigorously because of the complexities in such consideration. A pipeline might length for miles, while the numerical analysis model using conventional solid finite elements is huge in computational expense, making the successful analysis very time-consuming. This research innovatively develops a new line element, namely the pipeline element, featuring the explicit considerations of soil -pipe interactions and thermal expansion. This element is numerically efficient by eliminating modeling buried soils. The element derivation procedure is elaborated with details, while a Newton-Raphson typed numerical analysis procedure is proposed for nonlinear analysis of pipelines subjected to thermal expansion. An Updated-Lagrangian description is employed for facilitating large deflections. Three groups of examples are provided to demonstrate the numerical robustness of the proposed method. Finally, a case study is given to identify the vital influential factors to the therm al upheaval buckling of pipelines.

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FEM-based evaluation of friction and initial imperfections effects on sandwich pipes local buckling

Cited by 15 publications

References 16 publications

Finite Element Analysis of Drill Pipe-Slip System

Finite Element Analysis of Drill Pipe-Slip System

Efficient Analytical Model for Long‐Term Performance of Laminated Tube with Viscoelastic Interlayer by Quasi‐Elastic Approximation

Line-Element Formulation for Upheaval Buckling Analysis of Buried Subsea Pipelines Due to Thermal Expansion

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