3-D finite element analysis of catenary mooring - part II: numerical techniques for static analysis

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TypeTechnical Report
Series titleLaboratory Memorandum
Subjectdynamic relaxation; numerical methods; static analysis of cables and moorings
AbstractFor maximum flexibility, displacement based finite element formulations are used for the analysis of catenary mooring structures. Numerical methods for the static solution require special attention. The static equilibrium equations are highly nonlinear, solution of which necessitates use of an incremental or incremental iterative procedure, there are also more serious difficulties with the use of conventional numerical methods. Sources that contribute to the difficulties are discussed. Alternative methods based on dynamic relaxation are outlined. An adaptive dynamic relaxation technique has been developed. Results from its application to a wide range of examples have demonstrated its numerical robustness and efficiency. The proposed method has been incorporated into a computer program that is being developed at IMD.
Publication date
PublisherNational Research Council Canada. Institute for Marine Dynamics
PlaceSt. John's, NL
AffiliationNRC Institute for Ocean Technology; National Research Council Canada; Energy, Mining and Environment
Peer reviewedNo
NRC number5853
NPARC number8895245
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Record identifier1ff73f72-1cf3-4665-9fd7-3696fef9601b
Record created2009-04-22
Record modified2016-10-03
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