Preliminary Design of Tubular Composite Structures Using Netting
                    Theory and Composite Degradation Factors

Tew, B. W.

doi:10.1115/1.2842141

Cited by 14 publications

(3 citation statements)

References 7 publications

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“…The material failure bounds are shifted to the right-hand side, so higher thickness values are required to cope with the increased pressure value. A similar trend is observed in Figure 4d, where the vessel's radius is increased to 1.0 m. In thin-walled analysis, doubling the load or the radius leads to the same change in stress state [9]. When comparing Figure 4c and Figure 4d, it can be seen that this is not the case for thick-walled analysis.…”

Section: A Inner Shellsupporting

confidence: 74%

Structural integration of a full-composite, double-walled, vacuum-insulated, cryo-compressed tank for the Flying V: a numerical study

Poorte,

van Campen,

Bergsma

et al. 2024

AIAA SCITECH 2024 Forum

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Section: A Inner Shellsupporting

confidence: 74%

Structural integration of a full-composite, double-walled, vacuum-insulated, cryo-compressed tank for the Flying V: a numerical study

Poorte,

van Campen,

Bergsma

et al. 2024

AIAA SCITECH 2024 Forum

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“…Next, the FEA is carried out using these values. The off-axis (angled) plies was determined as +53.5° using Netting Theory (Evans & Gibson 2002;Tew 1995;Carey & Mertiny 2013;DOD 2002;Gillett 2018). However, the design was optimized as presented in Section 3.5.…”

Section: 0mentioning

confidence: 99%

Composite risers for deep waters using a numerical modelling approach

Amaechi

Gillett

Odijie

et al. 2019

Composite Structures

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There has been an increase in the application of composite structures in the oil and gas industry over the past four decades. This is due to more technological advancement and an increase in demand for the oil and gas. This trend has led to offshore exploration to transit from shallow water to deep water operations. Thus the need for more lightweight composite structures to reduce the deck loads and enable ease of operation. Composite risers are important as the properties of composite materials can be harnessed to improve riser performance and weight. This will enhance the development of deep water hydrocarbon reservoirs. In this paper, numerical stress analysis of composite offshore risers for deep water applications is carried out. ANSYS ACP is used for the finite element modelling of the composite riser for six load cases. From the design, recommendations for the design of the composite riser are made.

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“…There are different plies oriented at different angles (in this case, the vessel longitudinal axis is considered as 0 • ). Due to a physical network of fibres, netting theory is commonly used for a preliminary analysis [5,6]. Zhang et al [7] uses netting theory to determine the laminate layout for the cylindrical section.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Filament Wound Cylindrical Composite Pressure Vessels Accounting for Variable Dome Contour

et al. 2021

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In this work, the stress distribution along cylindrical composite pressure vessels with different dome geometries is investigated. The dome contours are generated through an integral method based on shell stresses. Here, the influence of each dome contour on the stress distribution at the interface of the dome-cylinder is evaluated. At first, the integral formulation for dome curve generation is presented and solved for the different dome contours. An analytical approach for the calculation of the secondary stresses in a cylindrical pressure vessel is introduced. For the analysis, three different cases were investigated: (i) a polymer liner; (ii) a single layer of carbon-epoxy composite wrapped on a polymer liner; and (iii) multilayer carbon-epoxy pressure vessel. Accounting for nonlinear geometry is seen to have an effect on the stress distribution on the pressure vessel, also on the isotropic liner. Significant secondary stresses were observed at the dome-cylinder interface and they reach a maximum at a specific distance from the interface. A discussion on the trend in these stresses is presented. The numerical results are compared with the experimental results of the multilayer pressure vessel. It is observed that the secondary stresses present in the vicinity of the dome-cylinder interface has a significant effect on the failure mechanism, especially for thick walled cylindrical composite pressure vessel. It is critical that these secondary stresses are directly accounted for in the initial design phase.

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Preliminary Design of Tubular Composite Structures Using Netting Theory and Composite Degradation Factors

Cited by 14 publications

References 7 publications

Structural integration of a full-composite, double-walled, vacuum-insulated, cryo-compressed tank for the Flying V: a numerical study

Structural integration of a full-composite, double-walled, vacuum-insulated, cryo-compressed tank for the Flying V: a numerical study

Composite risers for deep waters using a numerical modelling approach

Numerical Analysis of Filament Wound Cylindrical Composite Pressure Vessels Accounting for Variable Dome Contour

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