NUMERICAL INVESTIGATION OF SEABED INTERACTION IN TIME DOMAIN ANALYSIS OF MOORING CABLES

In this paper, an efficient two-dimensional finite element model for numerical analysis of mooring cables and seabed interaction has been built. Geometric shape and dynamics of mooring cables are computed in time domain, accounting for the motions of the moored sturcture. In the model, a hybrid beam...

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Bibliographic Details
Published in:Journal of Hydrodynamics 2006-08, Vol.18 (4), p.424-430
Main Authors: YU, Long, TAN, Jia-hua
Format: Article
Language:English
Subjects:
dynamics of mooring cable
Marine
seabed interaction
soil constitutive models
二维有限元模型
土壤构成模型
数字分析
水流动力学
海底交互作用
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Summary:In this paper, an efficient two-dimensional finite element model for numerical analysis of mooring cables and seabed interaction has been built. Geometric shape and dynamics of mooring cables are computed in time domain, accounting for the motions of the moored sturcture. In the model, a hybrid beam element is employed to simulate the mooring cable while the seabed is simulated by application of different soil constitutive models. After the elastic and elastic-plastic soil constitutive models have been used for computation, tensions and offsets of mooring cables at fairlead point are also compared accounting for friction effect between cables and seabed. Both transversal and longitudinal behaviors are studied at different water depths.
ISSN:1001-6058
1878-0342
1000-4874
DOI:10.1016/S1001-6058(06)60115-7