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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/355

Title: Nonlinear coupled response of offshore tension leg platforms to regular wave forces
Authors: Jain, A K
Keywords: tension leg platform
excess buoyancy
horizontal plane
hydrodyaamic drag
Issue Date: 1997
Citation: Ocean Engineering, 24(7), 577-592
Abstract: Among the compliant platforms, the tension leg platform (TLP) is a vertically moored structure with excess buoyancy. The TLP is designed to behave in the same way as any other moored structure in horizontal plane, at the same time inheriting the stiffness of a fixed platform in the vertical plane. Dynamic response analysis of a TLP to deterministic first order wave forces is presented, considering coupling between the degrees-of-freedom surge, sway, heave, roll, pitch and yaw. The analysis considers nonlinearities produced due to changes in cable tension and due to nonlinear hydrodyaamic drag forces. The wave forces on the elements of the pontoon structure are calculated using Airy's wave theory and Morison's equation ignoring diffraction effects. The nonlinear equation of motion is solved in the time domain by Newmark's beta integration scheme.The effects of different parameters that influence the response of the TLP are then investigated.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/355
Appears in Collections:Civil Engineering

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