Abstract

In case of completely submerged floating structure, no change in buoyancy can beexpected with its dynamic motion and the restoring force fully depends on cables. Consequently, it is necessary to seize the relation between structural displacement and restoring force and to evaluate the effect ofnonlinear deformation of cables on the dynamic response. This study aims to evaluate the effect of deformation of mooring cable caused by self-weight, inertia and fluid force on the vibration of the structure. This paper introduces nonlinear equations of motion considering the dynamic behavior of the cables and investigates the effect of dynamic deformation of cables on whole behavior with numerical examples.

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