Behaviour of reinforced thermoplastic pipe (RTP) under combined external pressure and tension

Bai, Yong; Xu, Weiping; Cheng, Po-Tai; Wang, Nuosi; Ruan, Weidong

doi:10.1080/17445302.2013.835147

Cited by 49 publications

(12 citation statements)

References 7 publications

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“…Both longitudinal cracks resulting from buckling and shear cracks caused by the failure of the material occurred in their tests. Bai et al 136 developed a two-dimensional (2D) theoretical model based on the theory initially proposed by Kyriakides et al 132 and a three-dimensional (3D) FE model to study the behaviours of RTPs under combined external pressure and tension. The RTPs were assumed to be made from PE and combinations of aramid fibres and PE matrix materials.…”

Section: Offshore Pipes Under Combined External Pressure and Tensionmentioning

confidence: 99%

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A review of the design and analysis of reinforced thermoplastic pipes for offshore applications

Морозов

Ashraf

et al. 2017

Journal of Reinforced Plastics and Composites

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The development and recent applications of reinforced thermoplastic pipes for offshore oil and gas applications are reviewed. The design and materials of reinforced thermoplastic pipes are presented. Reinforced thermoplastic pipes have been increasingly accepted as an important alternative to traditional metallic offshore pipes due to their distinct advantages such as a higher stiffness to weight ratio, improved fatigue resistance and better corrosion resistance. Their potential applications can be extended to deep-water risers. Loading conditions which could be experienced by them for offshore applications are described. Existent studies and analyses of offshore pipes under these loading conditions are discussed. Based on this discussion, this article outlines the limitations of the current studies of reinforced thermoplastic pipes and future work to improve the analysis and design of reinforced thermoplastic pipes is recommended.

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Section: Offshore Pipes Under Combined External Pressure and Tensionmentioning

confidence: 99%

“…Bai et al. 136 developed a two-dimensional (2D) theoretical model based on the theory initially proposed by Kyriakides et al. 132 and a three-dimensional (3D) FE model to study the behaviours of RTPs under combined external pressure and tension.…”

Section: Analysis Of Offshore Pipes Under Different Loadsmentioning

confidence: 99%

A review of the design and analysis of reinforced thermoplastic pipes for offshore applications

Морозов

Ashraf

et al. 2017

Journal of Reinforced Plastics and Composites

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“…Due to the outstanding advantages such as excellent corrosion resistance, good thermal insulation, the high stiffness, and low weight, some composite materials have been used to build reinforced thermoplastic pipes (RTPs) which can be used in the field of ocean engineering. [ 1‐5 ] At present, RTPs have been successfully used as oil‐gathering pipes, water injection pipes, and gas export pipes in the Middle East and Southeast Asia for many years. [ 6 ] As shown in Figure 1, RTPs consist of three main parts including the coating, laminates, and liner.…”

Section: Introductionmentioning

confidence: 99%

An analytical model for the progressive failure prediction of reinforced thermoplastic pipes under axial compression

Liu

Wang

et al. 2021

Polymer Composites

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An analytical model is presented to predict the progressive failure of reinforced thermoplastic pipes (RTPs) under axial compression, in which the existing homogenization method and a nonlinear stiffness degradation model are combined to predict the continuum damage mechanical response in an iterative and cyclic way. As the homogenization method ignores the effect of the cross‐sectional curvature on the damage sequence, a stress correction factor is defined to consider this effect. Once corrected stresses satisfy Hashin‐Yeh failure criteria, the nonlinear stiffness degradation model is adopted to update the constitutive relationship established by the homogenization method. The proposed model is capable of identifying the damage location and failure mode, analyzing damage accumulation and predicting the ultimate compression. Meanwhile, ABAQUS Explicit quasi‐static analyses calling a user‐defined subroutine were conducted to capture the progressive failure mechanisms in 3D composites and verify the proposed model. The proposed model was found to give accurate prediction on the elastic stiffness, first ply failure, the damaged stiffness, the ultimate compression, and stress distributions. Furthermore, the effects of fiber's winding angles and the thickness‐radius ratios have been discussed, which illustrate that tensile failure mode would appear even when RTPs are under axial compression.

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“…Rao Yarrapragada et al (2012) used the Windenburg equation, which was developed for homogeneous materials, to predict the critical buckling pressure of composite shells with equivalent stiffness moduli, and compared the results with NLFEM. It is not surprising that a lot of studies on cylindrical shells made of steel or composite materials have also been made in the literature (Jones, 2010;Bai et al, 2013a;Bai et al, 2013b;Smith et al, 2013;Bai et al, 2014;Guz et al, 2014;Abdel-Nasser et al, 2015;Lee et al, 2016;Xiong et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

An empirical formula for predicting the collapse strength of composite cylindrical-shell structures under external pressure loads

Cho

Paik

2019

Ocean Engineering

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This paper derives an empirical formula for predicting the collapse strength of composite cylindrical-shell structures under external hydrostatic pressure loads as a function of geometric dimensions and layered angles, where the effects of initial manufacturing imperfections are implicitly taken into account. A series of experiments are undertaken on [ /90]FW filament-wound-type composite cylindrical-shell models subjected to collapse pressure loads. A total of 20 composite cylindrical-shell models are tested to derive the empirical formula, which is validated by comparison with experimental data, existing design formulas of ASME 2007 and NASA SP-8700, and solutions of the nonlinear finite element method. It is concluded that the proposed formula accurately predicts the collapse pressure loads of filament-wound composite cylinders and will thus aid the safety design of composite cylindrical shell-structures under external pressure loads.

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Behaviour of reinforced thermoplastic pipe (RTP) under combined external pressure and tension

Cited by 49 publications

References 7 publications

A review of the design and analysis of reinforced thermoplastic pipes for offshore applications

A review of the design and analysis of reinforced thermoplastic pipes for offshore applications

An analytical model for the progressive failure prediction of reinforced thermoplastic pipes under axial compression

An empirical formula for predicting the collapse strength of composite cylindrical-shell structures under external pressure loads

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