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Abstract A theoretical explicit formulation for numerical simulation of the buckle propagation in deepwater pipelines is proposed. It is based on thin shell theory incorporating large rotations and… (More)
The objective of this work is to evaluate the stress concentration induced by longitudinal and transverse plain dents on steel pipelines under cyclic internal pressure. This work is within a study to… (More)
A nonlinear finite element model was developed to assess stress concentration factors induced by plain dents on steel pipelines subjected to cyclic internal pressure. The numerical model comprised… (More)
ABSTRACTSubsea production systems (SPSs) have dominated the exploration of oil and gas resources in deep water; however, failure of SPSs can lead to enormous economic loss, serious environmental po...
This ongoing work aims to refine a methodology for fatigue life assessment of dented steel pipelines under cyclic internal pressure. A numerical model is developed to obtain stress concentration… (More)
This paper presents a new algorithm for assessing the fatigue life of dented pipelines. The proposed methodology was conceived according to the current stress-life fatigue theory and design practice:… (More)
Ultimate strength of structural flat panels typical of ships' structures is analysed. Finite element models have been used to consider geometric and material non-linear behaviour based on thin shell… (More)
Collars are devices similar to thick-walled rings which are welded to adjacent strings of pipe during installation through the J-lay method. They are designed to support the hanged portion of the… (More)