Abstract
This paper proposes a geometrically exact formulation for three-dimensional static and dynamic analyses of the umbilical cable in a deep-sea remotely operated vehicle (ROV) system. The presented formulation takes account of the geometric nonlinearities of large displacement, effects of axial load and bending stiffness for modeling of slack cables. The resulting nonlinear second-order governing equations are discretized spatially by the finite element method and solved temporally by the generalized-α implicit time integration algorithm, which is adapted to the case of varying coefficient matrices. The ability to consider three-dimensional union action of ocean current and ship heave motion upon the umbilical cable is the key feature of this analysis. The presented formulation is firstly validated, and then three numerical examples for the umbilical cable in a deep-sea ROV system are demonstrated and discussed, including the steady configurations only under the action of depth-dependent ocean current, the dynamic responses in the case of the only ship heave motion, and in the case of the combined action of the ship heave motion and ocean current.
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This research was financially supported by the National High Technology Research and Development Program of China (863 Program, Grant No. 2008AA09Z201).
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Quan, Wc., Zhang, Zy., Zhang, Aq. et al. A geometrically exact formulation for three-dimensional numerical simulation of the umbilical cable in a deep-sea ROV system. China Ocean Eng 29, 223–240 (2015). https://doi.org/10.1007/s13344-015-0016-0
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DOI: https://doi.org/10.1007/s13344-015-0016-0