Buckling of reinforced thermoplastic pipe (RTP) under combined bending and tension

Bai, Yong; Ruan, Weidong; Cheng, Po-Tai; Yu, Bo; Xu, Weiping

doi:10.1080/17445302.2014.887171

Cited by 31 publications

(14 citation statements)

References 10 publications

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“…Meanwhile, the thickness of the pipe wall has to satisfy the requirements of the hydrostatic pressure resistance, corrosion resistance and mechanical protection requirement [34]. Consequently, the performances of RTPs with different D=t ratios subjected to combined external pressure and bending are examined using the proposed modelling technology to better understand their mechanical behaviour under this loading case.…”

Section: Effects Of D=t Ratiosmentioning

confidence: 99%

Numerical analysis of the mechanical behaviour of reinforced thermoplastic pipes under combined external pressure and bending

Морозов

Ashraf

et al. 2015

Composite Structures

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Section: Effects Of D=t Ratiosmentioning

confidence: 99%

Numerical analysis of the mechanical behaviour of reinforced thermoplastic pipes under combined external pressure and bending

Морозов

Ashraf

et al. 2015

Composite Structures

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“…4 T r helical winding angle; the reinforced tape is a combination of matrix (usually HDPE or PA or PVDF) and twisted aramid fibers. These three layers can be considered as perfect bonded because they are formed by heating extrusion during the manufacturing process [9]. Due to the anisotropy of RTP materials, it is convenient to adopt a sufficient and accurate method to compute the equivalent bending stiffness as follows [11]: Inverted the stiffness matrix [ABD] of the RTP laminate [19] in which their parameters depend mainly on the mechanical properties ( 1 2 1 2 1 2, , , E E G X ) and fiber orientation angle ( T ) of the RTP, then the variables 14can be evaluated.…”

Section: Bending Stiffness Of Rtpmentioning

confidence: 99%

“…Reinforced Thermoplastic Pipe (RTP) is a kind of composite material flexible pipe, which consists of a thermoplastic liner, two-layer reinforcement and a thermoplastic protective outer covering [9]. For its outstanding behavior in eroded environment and fatigue loading (see Fig.…”

Section: Introductionmentioning

confidence: 99%

Free Vibration Modeling and Computation of Reinforced Thermoplastic Pipe (RTP) Conveying Fluid in Off/Inshore Industry Applications

Abbas

Chen

et al. 2018

MATEC Web Conf.

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Reinforced Thermoplastic Pipe (RTP) is a composite material flexible pipe. Due to RTP superior behavior, it encouraged the industry for using to offshore and inshore applications. Marine risers and cross-country pipelines resting on elastic medium are slender flexible structures conveying fluid and exhibit complex dynamic behaviors. Therefore, it requires accurate dynamic modeling for prediction the vibration characteristics. Transfer Matrix Method for Multibody Systems (MSTMM) is one of the sophisticated methods that can be used efficiently to model large systems and calculate its vibration characteristics and dynamic responses. The size of matrices in MSTMM remains small regardless of the number of elements in the model. Having smaller matrix sizes helps to have less computational expense leading to a faster answer. Based on the MSTMM advantages and Euler-Bernoulli linear theory, transfer matrix of the pipe in both offshore and inshore industry applications is built-up for vibration analysis. Recursive eigenvalue search algorithm is used to determine the system frequencies. Numerical examples are performed to validate with those published in the open literature.

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“…Laminated tubes were also considered by Tarn et al [13] to present a state space approach to torsion, extension, bending, shearing and pressure. Bai et al [14] investigated the buckling behavior of thermoplastic pipes under combined bending and tension loads. Derisi et al [15] and Shadmehri et al [16] studied the composite tubes under bending.…”

Section: Introductionmentioning

confidence: 99%

Homogenization and Equivalent Beam Model for Fiber-Reinforced Tubular Profiles

2020

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The current work presents a study on hollow cylinder composite beams, since hollow cylinder cross-sections are one of the principal geometry in many engineering fields. In particular, the present study considers the use of these profiles for scaffold design in offshore engineering. Composite beams cannot be treated as isotropic ones due to couplings mainly present among traction, torsion, bending and shear coefficients. This research aims to present a simple approach to study composite beams as they behave like isotropic ones by removing most complexities related to composite material design (e.g., avoid the use of 2D and 3D finite element modeling). The work aims to obtain the stiffness matrix of the equivalent beam through an analytical approach which is valid for most of the laminated composite configurations present in engineering applications. The 3D Euler–Bernoulli beam theory is considered for obtaining the correspondent isotropic elastic coefficients. The outcomes show that negligible errors occur for some equivalent composite configurations by allowing designers to continue using commercial finite element codes that implement the classical isotropic beam model.

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Buckling of reinforced thermoplastic pipe (RTP) under combined bending and tension

Cited by 31 publications

References 10 publications

Numerical analysis of the mechanical behaviour of reinforced thermoplastic pipes under combined external pressure and bending

Numerical analysis of the mechanical behaviour of reinforced thermoplastic pipes under combined external pressure and bending

Free Vibration Modeling and Computation of Reinforced Thermoplastic Pipe (RTP) Conveying Fluid in Off/Inshore Industry Applications

Homogenization and Equivalent Beam Model for Fiber-Reinforced Tubular Profiles

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