Objective
The overall aim of the project is the development of an integrated software package which will allow users to model all aspects of the complex behaviour of flexible pipeline risers under ambient offshore loading conditions. A major innovation is that fully three -dimensional finite motions and rotations of the flexible pipeline will be available and, also, that these global values may be used in a local analysis for the stresses and strains in a layered pipeline section.
A generalised suite of finite element programs with integrated pre -and post-processing facilities for the analysis of offshore flexible riser production systems has been developed by MCS International. Extensive testing and validation of the FLEXTECH package has been successfully completed for an number of realistic offshore flexible riser configurations. MCS have contributed to a number of submissions whereby competing flexible riser packages have addressed a set of test cases selected by interested industrial companies and these comparisons will be published shortly. Preliminary indications are that the FLEXTECH results are in good agreement with those produced by alternative products.
It is concluded that the development of the FLEXTECH package as a comprehensive flexible riser analysis suite has been successful in achieving its specified technical objectives. Commercial success wil be strongly influenced by the ability of MCS to overcome the intense competition from other well-positioned international engineering companies.
The basic mathematical technique used in FLEXTECH for modelling in flexible riser response is the finite element method. Stiffness, mass and finite rigid body rotation terms are assembled in a convective coordinate system that follows the moving pipeline.
All possible load terms including current, waves, ship motions, gravity and seabed friction are incorporated and the varying seabed touchdown point is monitored. A very efficient numerical solution method in time is available whereby the optimum size of the time increment is automatically selected by the program for the user; a linear frequency domain solution about a static nonlinear position is incorporated. The mechanical behaviour of bonded and unbonded flexible pipeline wall constructions may also be analysed and failure states of the armouring or bonding layers predicted.
Data entry and interpretation of the generated results is facilitated by purpose-written pre-and post-processors.
The accuracy and utility of FLEXTECH hasbeen validated by numerous test cases covering all the major features described above.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
Galway
Ireland
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.