Optimization of composite catenary risers

Silva, Rafael Fernandes da; Teófilo, Fábio Anderson Fonteles; Parente, Evandro; Melo, Álisson José Maia; Holanda, Áurea Silva de

doi:10.1016/j.marstruc.2013.04.002

Cited by 29 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The riser structural analysis is performed in two stages, global and local, this methodology is employed to flexible risers, but also recommend to composite risers [6]. At the global step, an inextensible cable model [7] performs the analysis considering the entire riser system in order to obtain axial forces acting on it and global displacements (bending and torsional moments are neglected); these data are the input for the next stage of the analysis, when stresses and strains at each lamina are evaluated locally by the Classical Laminated Theory (CLT) in several sections of the riser.…”

Section: Composite Catenary Risermentioning

confidence: 99%

Multiobjective optimization of composite risers

Maia¹,

Parente²

2018

Proceedings of the 4th Brazilian Conference on Composite Materials

View full text Add to dashboard Cite

Use of fiber-reinforced laminated composites has proved itself as a valuable option in the manufacturing of risers, particularly for deepwater applications, a scenario where its lightweight related properties and good fatigue resistance are most needed. In addition, its use allows these structures to be tailored to meet specific manufacturing, safety, and stability criteria. This paper proposes an optimization model to composite risers in a free-hanging catenary configuration that considers multiple load cases and two objective functions. The optimization is carried out using a modified version of the Nondominated Sorting Genetic Algorithm II (NSGA-II). The riser structural analysis is performed by an inextensible cable model that accounts for the vertical static loads, floater offset and current loads in a fast and efficient way. The proposed algorithm is validated using a benchmark problem and applied to obtain the Pareto Front of a composite riser.

show abstract

Section: Composite Catenary Risermentioning

confidence: 99%

Multiobjective optimization of composite risers

Maia¹,

Parente²

2018

Proceedings of the 4th Brazilian Conference on Composite Materials

View full text Add to dashboard Cite

show abstract

“…From previous analyses of optimization problem (1), we know that the number of design variables varies with the number of plies and that it is difficult to calculate the distances between individuals using formula (15). In view of the characteristics of the objective function in terms of the number of plies, there are local extreme points corresponding to each ply number.…”

Section: Improved Niching Evolutionary Algorithmmentioning

confidence: 99%

“…Most applications do not consider the number of plies as a design variable [14][15][16][17][18]. Azarafza et al [18] set the fiber volume ratio, ply orientations, and ply thickness as design variables and performed a multiobjective optimization of the weight and transient dynamic response of a composite laminated tube using a basic genetic algorithm (GA).…”

Section: Introductionmentioning

confidence: 99%

“…Azarafza et al [18] set the fiber volume ratio, ply orientations, and ply thickness as design variables and performed a multiobjective optimization of the weight and transient dynamic response of a composite laminated tube using a basic genetic algorithm (GA). Da Silva et al [15] optimized the ply orientations and ply thicknesses of composite catenary risers under multiple load cases based on a GA. Previous studies have indicated that evolutionary algorithms are suitable for composite laminated tube optimization with multiple objectives, multiple load cases, or complex constraints under a fixed number of plies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design Optimization of Composite Laminated Tube Based on Improved Niching Evolutionary Algorithm

Zhao

Pan

2017

Mathematical Problems in Engineering

View full text Add to dashboard Cite

A minimum weight design is developed for a composite laminated tube considering the number of plies as one of the design variables. The objective function is found to be complex, and more than one optimal design point may exist with different numbers of plies. Existing methods based on evolutionary algorithms tend to become trapped around a local optimum and can find no more than one optimal result per calculation. Aiming at the characteristics of the objective function, an improved evolutionary algorithm (INDE for short) is established based on niching technology. The formula for calculating the distance between individuals in the niching technology is improved to satisfy the minimum weight design for the composite laminated tube. As a result, the improved niching evolutionary algorithm offers better global search ability and can find more than one optimal result per calculation for different numbers of plies.

show abstract

“…Chen et al use the critical moments, pressures and tensions obtained from a global analysis to check the local structural strength which provides a simple and effective method of linking the global and local analysis. A similar method is utilized by Silva et al (Silva et al, 2013) using load and amplification factors to account for pressure, bending moments and environmental loads through the tension forces of classical laminate plate theory. Pham et al (Pham et al, 2015) described a nested multiscale method for flexible risers to concurrently link the global analysis of the flexible pipe and the RVE analysis of the local regions of interests in every load step.…”

Section: Mechanical Behavior Modeling Of Composite Risers Under Deepwmentioning

confidence: 99%

A review on design, manufacture and mechanics of composite risers

et al. 2016

View full text Add to dashboard Cite

Exploration of deeper oceans for oil and gas requires increasingly lightweight solutions. A key enabler in this aspect is the use of fiber-reinforced composite materials to replace metals in risers. However, design synthesis and analyses of composite risers are more challenging than for conventional metals due to the complex behavior and damage mechanisms which composite materials exhibit. Composite risers are predicted to be a high-impact technology that will be mainstream in the medium term but there is still relatively little literature pertaining directly to the behavior of these materials under the complex loading scenarios arising from their use in deep water structures. Therefore there is a need to perform a review and assessment of the available technologies and methodologies in the literature to gain a good understanding of their predictive capabilities, efficiency and drawbacks. This article provides a comprehensive review of published research on manufacture, experimental investigations and numerical analyses of composite risers in deepwater conditions determining the gaps and key challenges for the future to increase their application.

show abstract

Optimization of composite catenary risers

Cited by 29 publications

References 25 publications

Multiobjective optimization of composite risers

Multiobjective optimization of composite risers

Design Optimization of Composite Laminated Tube Based on Improved Niching Evolutionary Algorithm

A review on design, manufacture and mechanics of composite risers

Contact Info

Product

Resources

About