Am. Soc. Mech. Eng., (Pap.); (United States) · 1983 · 26 citations · 0 references
EngineeringMechanical EngineeringOcean EngineeringApplied MechanicsComputational MechanicsFluid DynamicsComputational DynamicsDynamic Response AnalysisDynamic Structural ResponseNonlinear Structural AnalysisTension-leg PlatformsTime-history AnalysisComputational Structural DynamicsDynamic ResponseDynamics Of StructuresNonlinear Dynamic ResponseNonlinear StiffnessRelative Motion ModelingStructural Dynamic AnalysisStructural Dynamics Modeling
The dynamic response of tension-leg platforms subjected to wave loading was investigated using a deterministic dynamic analysis. The model employed in this study is based on coupled nonlinear stiffness coefficients and closed form inertia and drag forcing functions derived using Morison's equation. The forcing functions include relative motion behavior between the fluid particles and the structure. These forcing functions are integrated manually thereby avoiding the need for expensive numerical integration. A set of coupled nonlinear differential equations was integrated sequentially in the time domain using the Newmark beta-method. A computer program was developed to simulate the time history response of the platform motion.