Buckling stability of steel strip reinforced thermoplastic pipe subjected to external pressure

Bai, Yong; Liu, Ting; Cheng, Po-Tai; Yuan, Shuai; Yao, Dengzun; Tang, Gao

doi:10.1016/j.compstruct.2016.05.051

Cited by 63 publications

(14 citation statements)

References 11 publications

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“…The frictional coefficient between layers is another key parameter that may affect the pipe's mechanical behavior under axial extension and internal pressure load. In this section, the HDPE-steel frictional coefficient is kept constant, while the steel-steel frictional coefficients are considered as frictionless, 0.15 and 0.35, 20 and the corresponding axial extension-axial load curve are shown in Figure 29. From this figure, it can be easily noted that the increase in steel-steel frictional coefficient could boost the pipe tensile capacity, whereas the failure pressure-axial extension envelops in Figure 30 show that pipe with smaller steel-steel frictional coefficients possess greater burst pressure.…”

Section: Effect Of Frictional Coefficientmentioning

confidence: 99%

Failure behavior analysis of steel strip–reinforced flexible pipe under combined tension and internal pressure

Chen

Xiong

Bai

2018

Journal of Thermoplastic Composite Materials

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The mechanical behaviors of steel strip–reinforced flexible pipe (steel strip PSP) under combined axial extension → internal pressure ( T→ P) load path were investigated. Typical failure characteristics of pipe samples under pure internal pressure and T→ P load path were identified in the full-scale experiments. A theoretical model for pipe under tension load was proposed to capture the relationship between axial extension of the pipe body and stress state of the steel strip. Numerical study based on finite element (FE) method was conducted to simulate the experiment process, and good agreement between FE data and experiment results were observed. Sensitivity study was conducted to study the effect of some key parameters on the pipe antiburst capacities in T→P load path; the effect of preloaded internal pressure on the pipe tensile capacity in P→T load path was also studied. Useful conclusions were drawn for the design and application of the steel strip PSP.

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Section: Effect Of Frictional Coefficientmentioning

confidence: 99%

Failure behavior analysis of steel strip–reinforced flexible pipe under combined tension and internal pressure

Chen

Xiong

Bai

2018

Journal of Thermoplastic Composite Materials

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“…In this model, contact elements are defined between each layer while no interaction is considered between tendons of helical armor layers. Bai and his cooperators have also completed a series of experiments, numerical and theoretical analysis about metallic pipes under various loadings, such as external pressure [31] and torsion [32]. As for combined loadings, Bai et al [33] investigated mechanical responses of MSFP subjected to combined bending and external pressure while Dong et al [34] proposed a model for the biaxial dynamic bending of unbonded flexible pipes.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of metallic strip flexible pipes during reeling operation

Fang

Bai

2021

Marine Structures

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Metallic strip flexible pipes (MSFP), a relatively new style of unbonded flexible pipes, are considered as an attractive alternative to traditional submarine pipes. During its reeling operation, it will inevitably confront various complicated loads, which may affect the integrity and safety of MSFP's utilization. In this paper, the tension-extension and moment-curvature relation of MSFP were obtained by laboratorial tests. The mechanical properties were then imported into the global model established in ABAQUS. The finite element model was adopted to predict the deformation and mechanical responses of MSFP during the operation process. Besides, the effects of reeling length, the diameter of the coiling drum, and the pulling force were discussed. The obtained conclusions will provide some references for optimizing MSFP design and preventing possible damage in the reeling operation.

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“…Song et al 12 optimized the composite ring-stiffened cylindrical hulls to resist static hydro pressures and reduce weight. Investigations by Bai et al 13 and Yu et al 14 for the reinforced thermoplastic pipe subjected to external pressure or other load combinations are also referable for the mechanical analysis of composite rubber hoses. In general, it is not common to find in literature theoretical models to predict stresses and deformations of the stiffened composite hose.…”

Section: Introductionmentioning

confidence: 99%

“…Investigations by Bai et al. 13 and Yu et al. 14 for the reinforced thermoplastic pipe subjected to external pressure or other load combinations are also referable for the mechanical analysis of composite rubber hoses.…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling for offshore composite rubber hose with spiral stiffeners under internal pressure

Gao

et al. 2020

Journal of Reinforced Plastics and Composites

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Internal pressure is the most important functional load for the offshore composite rubber hose. In this paper, the stress and radial displacement of the hose under internal pressure are investigated. The hose dimensions are length of 10.7 m and nominal bore diameter of 500 mm. The composite structure is mainly composed of cord-rubber reinforcement layers and a spiral steel stiffener. To calculate the stress and deformation of the hose, the stiffener and composite cord-rubber layers are theoretically analyzed based on the Euler–Bernoulli beam theory and the Donnell shell theory, respectively. The stiffener distinguishes the hose from common filament wound un-stiffened composite pipes in regard to the stress distribution and radial deformation. It is found that the stiffener plays an important role in affecting the mechanical behavior of composite reinforcement. Influences of the cord-winding angle, the stiffener spacing, and the stiffener’s tensile stiffness on the axial, hoop and shear stresses, and the radial displacement are investigated. The analytical model shows a good agreement with the finite element model. It is supposed to be of significant reference for practical engineering.

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Buckling stability of steel strip reinforced thermoplastic pipe subjected to external pressure

Cited by 63 publications

References 11 publications

Failure behavior analysis of steel strip–reinforced flexible pipe under combined tension and internal pressure

Failure behavior analysis of steel strip–reinforced flexible pipe under combined tension and internal pressure

Mechanical behavior of metallic strip flexible pipes during reeling operation

Analytical modeling for offshore composite rubber hose with spiral stiffeners under internal pressure

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