Nonlinear wave load effects on the stochastic behavior of fixed offshore platforms Conference Paper uri icon

abstract

  • © 1986 Offshore Technology Conference. A two-dimensional multiple mode stochastic formulation, which accounts for the relative motion between the fluid and the structure, and addresses the non-linear wave loading effects has recently been developed. Four similar fixed offshore platforms designed for water depths ranging between 400 ft (122 m) and 1000 ft (328 m) are used to illustrate the methodology. The importance of considering both the wave-structure interaction and a third order approximation for the non-linear wave loading effects is discussed. The role of hydrodynamic damping as compared with the usual viscous damping approximations is also discussed. The numerical results consistently demonstrated that each of these factors plays a significant role when predicting the response of fixed offshore platforms in water depths in excess of 400 ft (122 m).

author list (cited authors)

  • Niedzwecki, J. M., & Sandt, E. W.

publication date

  • January 1986