Numerical analysis of deteriorated sub-sea pipelines under environmental loads

Gücüyen, Engın

doi:10.3901/cjme.2015.0909.111

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…Thus, the effect of damage caused by corrosion on the structural behaviour was examined. The effects of the damage caused by corrosion on pipelines were studied in [10]. The corrosion effect was investigated by modelling the behaviour of damaged and undamaged structures under the same environmental loads using the Abaqus finite element analysis program.…”

Section: Introductionmentioning

confidence: 99%

Analyses of damaged effects on jacket type offshore platform

2023

JCE

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In this paper, an offshore platform subjected to dynamic loading for different damage cases was modelled via fluid-structure interaction (FSI) analysis. Different damage models were considered in the case where one leg was broken, and the Young’s modulus of the damaged member was reduced with four different severity ratios. In addition to the five damaged structures, the undamaged structure was modelled according to two different leg spacing conditions. Thus, the damaged models were compared among themselves as well as with undamaged models. In this study, models were investigated using a numerical FSI technique. The numerical technique was verified using semi-analytical modelling. At this stage, the equation of motion of one of the structural models was solved using a semi-analytical method based on a multi-degree-of-freedom system. In addition, the numerical environment model was verified using a semi-analytical solution of the free-surface motion equation and the wave velocity-wave force curve. An Abaqus finite-element analysis program was used to model the structures and their surroundings. While the structures were modelled using the Lagrangian technique, the fluid surroundings were modelled using the Eulerian technique. Both the conditions of leg spacing and different severity ratios were modelled, and the most negative damage type was revealed.

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Section: Introductionmentioning

confidence: 99%

Analyses of damaged effects on jacket type offshore platform

2023

JCE

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“…能；文献 [6][7]研究了在内压作用时，纤维缠绕复合管的力学性能。文献 [8]对钢骨架塑料复合管所能承受的静压能力进行了研究。文献 [9]研究了内压支撑下薄壁管弯曲变形力学分析；文献 [10]研究了橡胶复合材料的宏细观力学行为；文献 [11][12][13][14][15] …”

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Stress Distribution of Steel Wire Braid Hydraulic Hose with Vibration of Foundation

Chen¹

2018

JME

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Abstract：The hydraulic hoses are largely used in the tunnel boring machine (TBM) hydraulic system, which are easily damaged parts in practice, resulting in the decrease of the security and reliability of the system. To achieve the distribution rule of stress on the hoses, the mathematical models for braiding hydraulic rubber hose in TBM that utilize classical laminate plate theory is described. The effects of oil pressure and vibration parameters on the life of hoses are analysed with simulation and experiment, and the results are as follows: firstly, the stress reaches its peak, and the vibration becomes obvious as well when the excitation frequency is close to the natural frequency of hose; secondly, the vibration of the hose grows stronger, while the stress decreases as the amplitude of the fundamental vibration goes up; thirdly, the maximum principal stress mutation of steel wire of hose will happen when the vibration acceleration reaches a certain value; fourthly, the oil pressure has less effect on the stress of steel layer of the hose. Key words：braiding

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“…While both the structure and the fluid are modelled in bidirectional interaction, only the structure is modelled and flow forces are transferred to the model in unidirectional interaction. Gücüyen [14,15] modelled the offshore diffuser and pipeline according to the bidirectional FSI analysis. Surana et al [16] developed different mathematical models for the bidirectional FSI analysis and verified the results by numerical models.…”

Section: Introductionmentioning

confidence: 99%

Wave theory effects on behaviour of a 3D truss offshore structure

Onüçyildiz¹

2017

JCE

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Wave theory effects on behaviour of a 3D truss offshore structure Dynamic analysis of a four legged offshore truss structure under the effect of wave forces is conducted in this study. The structure is a three-storey space frame system formed of cylindrical members whose legs are supported by lateral bracings and vertical diagonals. The structure and its environment are numerically modelled by the finite elements method with the fluid-structure interaction. Due to climatic reasons, various wave theories may be applied to the structure. Therefore, the offshore environment is modelled in numerical analysis by the Linear, Stokes 2, and Stokes 5 wave theories, separately. Utjecaji teorije valova na ponašanje izvanobalne prostorne rešetkaste konstrukcije U radu je provedena dinamička analiza izvanobalne rešetkaste konstrukcije s četiri pojasa pod utjecajem sila valova. Konstrukcija je prostorni rešetkasti sustav s tri etaže formirana od cilindričnih elemenata, a čiji su pojasi osigurani uzdužnim spregovima s vertikalnim dijagonalama. Konstrukcija i njezin okoliš su numerički modelirani metodom konačnih elemenata uz interakciju fluida i konstrukcije. Zbog klimatskih razloga, konstrukcija može biti izložena različitim teorijama valova, pa je izvanobalni okoliš modeliran pomoću zasebnih teorija valova i to linearne, Stokes 2 i Stokes 5 teorije.

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Numerical analysis of deteriorated sub-sea pipelines under environmental loads

Cited by 5 publications

References 19 publications

Analyses of damaged effects on jacket type offshore platform

Analyses of damaged effects on jacket type offshore platform

Stress Distribution of Steel Wire Braid Hydraulic Hose with Vibration of Foundation

Wave theory effects on behaviour of a 3D truss offshore structure

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